software program marketed to music related business; program consists of software module which presents syncronized lyrics, guitar chords, bass chords, chord fingering charts and audio of original artists recording; this program is software only, and performs only programmed songs

headphone amplifiers; monitor speakers; headphones; guitar amplifiers; keyboard amplifiers; microphones and headphones; electronic metronomes; audio mixers; graphic equalizers; musical sound effect units and digital signal processors for creating sound effects; digital sequencers for automatically playing electronic musical instruments; electronic controllers for musical synthesizer; synchronizing signal generators for musical instruments; analog or digital recorders; prerecorded video tapes ...