Warm Ups are simple exercises that help build technical skills. VP Warm Ups are organized by topic (bow strokes, vibrato, shifting, etc.) and by levels. Level A Warm Ups corresponds to Level A1/A2: Beginners through Folk Songs in A and D. Level B is for students who are learning to play 2 octave G/A/B flat on violin or 2 octave C/D/E flat on viola and cello. Level C is for intermediate level players who are working on Seitz, Rieding, Perlman, Kuchler, Vivaldi concerti. Level D is for advanced players.