Back in the day, there was an extension to ANSI control codes called ANSI Music[1]. It borrowed the musical notation from IBM-BASIC's (and GW-BASIC) 'PLAY' statement. The standalone ANSIPLAY would play them back, or with the Telimate terminal emulator it'd play in the background while you used a BBS.
The last version of ANSIPLAY[2] was 2.1 I believe.