Quantum Leap Stormdrum 2 Pro Bundle from EastWest is a virtual instrument, featuring 4GB of additional samples in addition to the original 12GB of Stormdrum 2's various acoustic percussion instruments, ranging from ethnic drums to found-sound percussion. Included are over one-hundred film-score-oriented MIDI performances, which allow for changing tempo, tuning individual instruments, and altering the performances, all without audio degradation. Each one includes dozens of variations, intros and endings.