Singer from Cape enthralled by Beatle's playing (4,7)
I believe the answer is:
paul robeson
'singer' is the definition.
(I know that Paul Robeson is a singer)
'cape enthralled by beatle's playing' is the wordplay.
'cape' becomes 'robe' (the word is emptied out or 'blank').
'enthralled by' indicates putting letters inside ('enthral' can mean 'capture').
'beatle's' becomes 'Paul's' (Paul McCartney).
'playing' becomes 'on' (on can mean playing or performing).
'robe' put into 'pauls' is 'paulrobes'.
'paulrobes'+'on'='PAUL ROBESON'
'from' acts as a link.
(Other definitions for paul robeson that I've seen before include "Singer of 5 across" , "Bass-baritone" , "See singer" .)