Put your name down to sing, perhaps (4)
I believe the answer is:
sign
'put' is the definition.
(signing is a kind of putting)
'your name down to sing perhaps' is the wordplay.
'sing' can be anagrammed to 'SIGN'.
Though, I am unsure how the anagram is indicated.
Can you help me to learn more?
(Other definitions for sign that I've seen before include "information board?" , "Pointer - indicate agreement in writing" , "Evidence" , "part of the zodiac" , "Indicator" .)