Software by MusicXoft, Inc:

pcSongster is a head-turning, personal computer-based, singing/karaoke software revolution that gives any singer easy access to music, coordinated lyrics and recording capabilities right on his or her personal computer.Extremely Versatile: 1. Use pcSongster to rehearse a new song while listening to the original in another window & application. 2. Change songs in a flash. Rehearse anywhere. 3. Start the same song over without delay