Martan Mann presents an easy method for pianists to play a smooth and natural time against time. Play 3 against 2, 3 against 4, 4 against 5, etc. These are very basic exercises which can be learned by classical and jazz pianists in all levels.
Check out: JazzSkills for Piano (jazzskillsforpiano.com) is Martan’s complete online course in studying jazz piano. JAZZ MASTERCLASS: Step-by-Step (https://jazzskillsforpiano.com/jazz-m…) are individual lessons for the classical or jazz pianist. Martan’s website: musicmann.com