A tango Elgar composed for free (2,5)
I believe the answer is:
at large
'free' is the definition.
(at large means free or released)
'a tango elgar composed' is the wordplay.
'tango' becomes 'T' (phonetic alphabet: alpha, bravo, charlie etc.).
'composed' indicates anagramming the letters.
'elgar' with letters rearranged gives 'large'.
'a'+'t'+'large'='AT-LARGE'
'for' is the link.
(Other definitions for at large that I've seen before include "'On the loose, escaped (2,5)'" , "General on the loose" , "Free, maybe escaped" , "Free - not confined (especially of wild animal, criminal)" , "Roaming freely" .)