Gregg Kowalsky has developed some interesting techniques using tapes cassettes and players, in his own words..."Through these experiments I developed a series entitled Tape Chants, which is made up of performances and compositions using tapes as the main source material, as well as the mono speakers of various cassette players for the piece's amplification. All of the cassettes are tuned to each other using the pitch control and halfspeed playback devices located on the Sony TCM 200DV cassette recorder. All of the compositions are constructed with tuned sinewaves as the starting point and the pieces are built using sources such as shruti box, percussion, gongs, etc."