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 you can see a link between them that I can't see?
'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" .)