Come through and check the piano (4)
I believe the answer is:
seep
'come through' is the definition.
The definition and answer can be both to do with motion as well as being verbs in their base form.
Maybe there's an association between them I don't understand?
'check the piano' is the wordplay.
'check' becomes 'see' (synonyms).
'the piano' becomes 'p' (musical abbreviation).
'see'+'p'='SEEP'
'and' is the link.
Can you help me to learn more?
(Other definitions for seep that I've seen before include "Come out slowly" , "Of liquid, ooze slowly out" , "Ooze, percolate" , "Trickle through slowly" , "Leak slowly, ooze" .)