Computer Aided Composition

1. Computer Aided Composition Kevin Wampler

2. more automation Assisted Notation and Layout Alternative Notations Musical Scripting Automatic Harmonization less automation Style-driven Suggestions Automated Composition

3. Computer Aided Composition Automatic Composition http://imagine.xs4all.nl/bram/mozart/

4. Computer Aided Composition Automatic Composition

5. Alternative Notations

6. UPIC

7. pitch time

9. Mycenae Alpha (excerpt)

11. Hyperscore

12. tension Harmonization line motif resolution Key changes

13. Musical Programming

14. Patchwork

15. Graphical LISP Framework

16. Libraries • Spectral music • Stochastic and dynamic models • Constraint-based music generation • Rhythmic tools • Etc.

21. Constraint Satisfaction • Common technique • User specifies: • Search space • Constraints • Heuristics • System searches for a solution, generally: • Constraint propagation (or forward checking) • Backtracking (or backjumping)

23. Automatic Harmonization

24. CHORAL • Harmonizes a chorale in the style of Bach • Expert system by Ebcioglu et. al • Written in BSL • Predicate logic on multiple views • Solved with a backtracking algorithm • Very complex “bordering on intractable”

25. Views • Chord skeleton • Fill-in • Time slice • Melodic string • Merged melodic string • Schenkerian analysis

27. Tonica • Neural network chorale harmonization • User specifies: • Chorale melody • Harmonization style • Harmonization in three steps: • Determine chords • Realize chords • Add passing notes

35. Style-based Composition

36. EMI • Expert system by David Cope • Mostly automatic, but can give suggestions • Music as language • Parse set of scores • Identify similarities • Recombine according to grammar

37. Signature Detection

38. ATN

39. Recombination

40. Style-specific Suggestions