Put your name down to sing? (4)
I believe the answer is:
sign
'put' is the definition.
(signing is a kind of putting)
'your name down to sing?' is the wordplay.
'sing' anagrams to 'SIGN'.
However, I'm unsure how this is indicated.
Can you help me to learn more?
(Other definitions for sign that I've seen before include "house" , "Manifestation" , "add name" , "Traffic control - to write one's name" , "Evidence" .)