Crossword Genius

Signal pupils to assemble perhaps: sound familiar? (4,1,4)

Ross

I believe the answer is:

ring a bell

I believe this clue is a double definition.

'signal pupils to assemble perhaps' is the first definition.
(as in a school bell)

'sound familiar?' is the second definition.
(something which seems familiar rings a bell)

(Other definitions for ring a bell that I've seen before include "Signal to start class" , "Seem familiar; toll" , "Formally declare (appointment)" , "Advice to cyclist" , "jog memories" .)

I've seen this clue in The Times.
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