Even though there is still active development work on music composition applications in Lisp.

Recently a new commercial application has been published: OpusModus http://opusmodus.com . It's written in Clozure Common Lisp and a port to Windows is planned.

Symbolic Composer (LispWorks) still has new releases from time to time.

PWGL (LispWorks) is still developed.

OpenMusic now is based on LispWorks and has a Linux port.