 Many of the television critics who praised the show in its first  season made reference to the series music, a combination of songs  by artists like Glenn Frey (I) (qv), Phil Collins (I) (qv) and  Kate Bush (qv) and original music by Jan Hammer (qv), the former  keyboardist for the Mahavishnu Orchestra. Frey and Collins made  cameo appearances in some episodes of the series.