Music 254/CS 275b Spring 2024 Syllabus

Music 254/CS 275b "Computational Music Analysis "
Stanford University (Spring 2024).

This music information retrieval course (previously listed as "Music Query, Analysis, and Style Simulation") builds on the foundation of Music 253/CS 275A (Symbolic Musical Information). Using an open-source analysis platform (such as the Humdrum Toolkit (unix/bash shell), Humdrum Extras (C++), [https://humlib.humdrum.org humlib], VHV. HumdrumR, or Music21 (Python), or their preferred programming language/environment) students plan and design their own applications involving symbolic musical data. See Online Resources after syllabus.

The first four weeks cover basic areas of music analysis and retrieval and introduce basic principles of using the Humdrum Toolkit. Students may be assigned individual reading assignments pertinent to their research topic areas. The remaining six weeks are spent on individual project development, with weekly reports and discussions. Extensive help is available in the lab during hours allotted to class time. Students give verbal and written reports on their research at the end of the quarter. Some projects may be appropriate for continuation in independent-study modules.

For class Zoom link
Please contact esfield@stanford.edu or craig@ccrma.stanford.edu

Meeting times:		Tuesdays & Thursdays 1:30–3:00
Location:		Online
Instructors:		Eleanor Selfridge-Field (esfield@stanford.edu) Craig Sapp(craig@ccrma.stanford.edu)
Office Hours:		after class and by appointment on Zoom/Skype/Google Hangouts
Credits:		2–4
Grading:		25% class participation, 75% project Project proposal: 2+ pages, due Thursday. 18 April 2024 Project progress report: 4+ pages, Thurs. 9 May 2024 Project presentation in class: Tues. 4 June 2024 Project writeup: 10–20 pages Graduating in June 2024: Due on 7 June 2024 11:59pm. Not graduating: Due on 11 June 2024 11:59pm.
Website:		music254.stanford.edu wiki.ccarh.org/wiki/Music 254 Overview of topics presented in Music 254.
Prerequisites:		Completion of Music 253/CS 275b, or demonstrated ability to use notation and sound software and associated requirements.
Textbook:		E. Selfridge-Field, ed., Beyond MIDI: The Handbook of Musical Codes (MIT Press, 1997). Available online by permission of the publisher.

Syllabus

Go to week: Harmony 1 | Melody 2 | Rhythm 3 | Harmony 4 | RegEx 5 | Programming 6 | 7 | 8

See also Music 253/CS 275a Syllabus

Week 1

Week	Dates	Topics
1	2 April, 4 April 2024	Lectures Lecture 1A. Computational Musicology Lecture 1B. Melodic Search: Fundamentals Verovio Harmony I Keyscapes Homework for new students For new students, enter this music in Verovio Humdrum Viewer. Try saving them as HTML scores from the File menu. Also useful, see this introduction to encoding music in Humdrum.

Week 2

Week	Dates	Topics
2	9 April 2024	Lectures: Approaches to melodic and other musical-similarity assessment Musical Similarity Overview Melodic Similarity Regular Expressions Regular Expressions
2	11 April 2024	Themefinder searching

Week 3

Week	Dates	Topics
3	16 & 18 April 2024	David Cope: Style Synthesis From Emmy to Emily Performance similarity in Chopin mazurkas

Week 4

Week	Dates	Topics
4	23 April 2024	Lectures: Practical Realities of Research Search Effectiveness [Tony demo] by Robert. Keyscapes
4	25 April 2024	Audio Similarity Audio similarity humlib: C++ parser for Humdrum files

Week 5

Week	Dates	Topics
5	20 April 2024	Audio similarity Music and AI: After Cope Harmony analysis tools
5	2 May 2024	Datasets for music research Melodic aspects of barbershop quartet music

Week 6

Week	Dates	Topics
6	7 May 2024	Compositional schemata Compositonal Schemata Programming for Humdrum files Humdrum Extras — C++ library for processing Humdrum files Tasso in Music Project
6	9 May 2024	Project reports Counterpoint Artificial Counterpoint Sonority distributions by bass-line scale degrees Corelli & Rule-of-the-octave data selection (PDF slides) Similarity with Normalized and Unnormalized Correlation

Week 7

Week	Dates	Topics
7	16 May 2024	Recent developments in MIR Recent Work in Symbolic MIR Recent Work in Harmonic Analysis 07B. Harmonic Models Ratioscores: A text-based system for just intervals, Julie Zhu and Craig Sapp

Week 8

Week	Dates	Topics
8	21 May 2024	Recent Research (and Challenges) in MIR Score search engines Composite rhythm Project development
8	23 May 2024	Rhythm and Meter Rhythm, Meter, and their Perception Project development

Week 9

Week	Dates	Topics
9a	28 May, 30 May 2024	Vocal clones Vocal clones MEI MEI (Music Encoding Initiative) Release 2.0

Week 10

Week	Dates	Topics
10	4 June 2024	Project presentations in class.
11	7 June 2024	Project write-ups for students taking a degree in June 2024.
12	11 June 2024	Project write-ups for students continuing at Stanford.

Online resources for this class

Data/Data entry

• Data/Data entry in Humdrum (PDF slides)
  • KernScores: digital library of scores in the **kern format
    • [1] introduction to KernScores
    • [2] shortcuts to data in KernScores
    • [3] browse collections in KernScores
  • [4]: Josquin Research Project: digital library of early Renaissance polyphony
  • xml2hum: MusicXML to Humdrum converter
  • mid2hum: MIDI to Humdrum converter (works in many cases, but better to convert MIDI first to MusicXML then import).

Humdrum & MIDI

• Humdrum to MIDI (PDF slides)

Harmony II

• Harmony II Key analysis
  • Key-cycles:
    • Hummel Op. 67 preludes
    • Chopin Op. 28 preludes
    • J.S. Bach Well-Tempered Clavier
  • keycor: harmonic structure plots.
  • mkeyscape: harmonic structure plots.
    • Beethoven piano sonata keyscapes
    • Mozart piano sonata keyscapes
    • Lots of keyscapes
  • transpose: Transpose score to specific key or by interval.

Regular Expressions (Text-based searching)

• Introduction to Regular Expressions

Harmony-related Humdrum tools

• Humdrum Harmony I

• hint: Harmonic intervals.
• tntype: twelve-tone chord prototypes.
• key: Krumhansl-Schmuckler key-finding algorithm.
• keycor: generalization of key command.
• sonority: triadic chord descriptions of sonorities.
• prange and cint tools

Rhythm and score manipulation tools

• Rhythm Tools available in Humdrum
  • timebase: create uniform duration for each Humdrum file data line.
  • beat: label metric beats in Humdrum file.
  • gettime: calculate performance time in seconds (according to tempo markings).
  • thrux: expand repeats to performance sequence
  • minrhy: identify minimum integral rhythmic unit in score
  • assemble: merge parts into a single score
  • partjoin: automation script to merge parts into a single score (preserves grace notes, uses minrhy and timebase)
  • ditto/dittox: resolve null tokens
  • hgrep: search for patterns in Humdrum file data.

Performance analysis tool

• Sonic Visualiser

• • Support tools:
    • assemble: merge separate spines into single data stream.
    • serialize: convert Humdrum data into single spine.
    • humcat : concatenate multiple scores together (download data from web).
    • ridx: remove various components of Humdrum file structure
    • ditto: resolve meaning of null tokens.
    • humsplit: split segmented Humdrum file streams into separate files.
  • Unix tools:
    • command line
    • list of command-line programs
    • sort: sort lines of data alphabetically or numerically.
    • uniq: Remove/count successively repeated lines of text.
• Pitchmix and Markov analysis of composite sonorities

Melody Lab

• Humdrum Lab 2

• Melody Tools available in Humdrum
  • melody tools:
    • mint: Melodic intervals
    • scaletype Simple scale type categorizer
    • tindex: Thema indexer.
    • themax: Thema search.
    • theloc: Thema localizer.
    • context: melodic n-grams
    • prange: Pitch range tool.
  • support tools:
    • kern: remove rhythms from note data.
    • myank Yank measures from a full score.
    • extract: extract spines from Humdrum file.
    • extractx: Humdrum Extras version of extract
    • hgrep: Humdrum-aware greep.
    • autostem: automatic stemming of notes.
  • unix:
    • head: show only starting lines of text.
    • grep: search text for generalized regular expressions.
    • egrep: enhanced grep (adds additional wildcards).
    • sed: Stream editor (search and replace).
  • graphics (unix):
    • pstopnm: a converter from PostScript to bitmaps.
    • convert: Imagemagick tool for manipulating images.
    • ps2pdf: convert PostScript into PDF files.

General Policies and University Rules

General policies and university rules:

1. Delivery times:
   1. Assignments: by the start of the class for which they are due.
   2. Project writeup: by 11 p.m. 7 or 11 June 2022 by 11p.
2. Honor code: We will act and expect you to act according to the Stanford Honor Code.
3. Students with disabilities: Students who may need an academic accommodation based on the impact of a disability must initiate the request with the Student Disability Resource Center (SDRC) located within the Office of Accessible Education (OAE). SDRC staff will evaluate the request with required documentation, recommend reasonable accommodations, and prepare an Accommodation Letter for faculty dated in the current quarter in which the request is being made. Students should contact the SDRC as soon as possible since timely notice is needed to coordinate accommodations. The OAE is located at 563 Salvatierra Walk (phone 723-1066).
4. Students in distress: Stanford offers an abundance of resources for students dealing with problems of a personal nature.
   1. Confidential support: (650) 736-6933
   2. Crisis hotline: (650) 725-9955
   3. Title IX questions: (650) 497-4955