Imprints, for caixa (Brazilian snare drum) and computer explores the drum’s diverse sounds made by shifting between playing techniques and a variety of attack placements. The computer emphasizes these timbres, accentuating the tonal characteristics of the drum, by passing its sound through a dynamic bank of filters that employ controlled delay effects. In several sections of the piece, these filters and delays are controlled by the incoming sound’s amplitude. The computer also performs real-time granular synthesis on source samples of the snare drum. Imprints is dedicated to percussionist, Julie Licata.