US composer whinges awfully about intro of record (8)
I believe the answer is:
gershwin
'us composer' is the definition.
(I've seen this before)
'whinges awfully about intro of record' is the wordplay.
'awfully' indicates an anagram.
'about' means one lot of letters goes inside another.
'intro of' suggests taking the first letters.
The initial letter of 'record' is 'r'.
'whinges' with letters rearranged gives 'geshwin'.
'geshwin' going around 'r' is 'GERSHWIN'.
(Other definitions for gershwin that I've seen before include "George and Ira ..., American musical brothers" , "Ira and George, US brother composers" , "George ........ composed ` `Porgy and Bess' '" , "SECOND PART OF 14" , "American composer" .)