Lovatts giant cryptic in June issue 118 of puzzle collections

I am stuck on 4 words. The clues as follows
Cheerful agreement on radio to fly over Caribbean vessel for Johnny Depp 5/5
Broadcasting again for messrs postlewaite and Sampras = 9 letters
Make it be an insect sting = 4 letters
Crooner Crosby holds clarinet essential for Reproducing = 8 letters

Thanks in anticipation. First time doing these type of cryptics
Cheers