Saturday I Cryptic

[racoony]

Help with 5 down please,
Clue is:Jazz tune's low noise did almost fade away. Answer is 2 words of 4 and 6 letters.I have M?O? I?D?G?
All I can find is mood indigo, bit I cannot see how it works.
Many thanks in advance.

[glasman]

Moo-low
noise-din
Did almost-di
fade away-go

[mallyh]

mood indigo is a jazz record

[scorpiojo]

Low - moo
Din - noise
Did
Go(ne)

[BigMac]

low = moo
noise = din
did almost = di
fade away = go
Mood indigo = famous jazz tune

[glasman]

Reverse first one