In the morning, repeatedly having gal changing blend (7)
I believe the answer is:
amalgam
'blend' is the definition.
(I've seen this before)
'in the morning repeatedly having gal changing' is the wordplay.
'in the morning' becomes 'am' (AM on a clock).
'repeatedly' shows that letters should be duplicated.
'having' means one lot of letters goes inside another.
'changing' indicates an anagram.
'am' duplicated is 'amam'.
'gal' is an anagram of 'lga'.
'amam' enclosing 'lga' is 'AMALGAM'.
(Other definitions for amalgam that I've seen before include "Mixture of metals" , "Mixture - alloy of mercury" , "mix" , "combination of things" , "Compound" .)