Cheap US whiskey, rye containing English notes (6)
I believe the answer is:
redeye
'cheap us whiskey' is the definition.
(US term for cheap whiskey)
'rye containing english notes' is the wordplay.
'containing' is an insertion indicator.
'english' becomes 'e' (abbreviation).
'notes' becomes 'de' (two musical notes).
'e'+'de'='ede'
'rye' going around 'ede' is 'REDEYE'.
(Other definitions for redeye that I've seen before include "flash result" , "Long overnight passenger flight" , "Flash-induced effect on photo" , "Effect of reflected flash on portrait" , "cheap whiskey" .)