Composer taking taxi back to hotel (4)
I believe the answer is:
bach
'composer' is the definition.
(Bach is an example)
'taxi back to hotel' is the wordplay.
'taxi' becomes 'cab' ('cab' can be a synonym of 'taxi').
'back' says the letters should be written backwards.
'to hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'cab' backwards is 'bac'.
'bac'+'h'='BACH'
'taking' acts as a link.
(Other definitions for bach that I've seen before include "German composer (affectionate to a Welshman?)" , "German baroque composer, d. 1750" , "German composer, who had twenty children, d.1750" , "Name of composing family" , "J. S. --, baroque composer" .)