Some concert souvenirs (4)
I believe the answer is:
tees
'some concert souvenirs' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tees that I've seen before include "Golfer's supports; river" , "English river" , "River of north-east England" , "Sides of Trent" , "sand-hills" .)