Misc

Sounds
Hariprasad Chaurasia - (bansuri flute) any recording.
Bill Evans at the Village Vanguard

Books
Rebel Music by Fischlin and Heble.
The Origins of Music by Nils Lennart Wallin, Björn Merker.

Research
History of improvisation in music
Intercultural improvisation
Improvisation in music education

Workout
Table tennis