Wait for routine song (6)

I believe the answer is:

waylay

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'wait' is the definition.
(waylaying is a kind of waiting)

'routine song' is the wordplay.
'routine' becomes 'way' (I can't explain this - if you can you should give a lot more credence to this answer).
'song' becomes 'lay' (poetic term for a song).
'way'+'lay'='WAYLAY'

'for' acts as a link.

Can you help me to learn more?

(Other definitions for waylay that I've seen before include "Stop or interrupt (someone)" , "Lie in wait for and ambush" , "Lie in wait for, maybe to rob" , "buttonhole" , "Intercept and attack" .)

I've seen this clue in The Independent.

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