As if by magic...

All together now...

Duddle-uh
duh-duh
duh-duuuuuuuh
Duddle-uh
duh-duh
duh-duuuuuuuh
Duddle-uh duh-duh
duh duddluh-duddluh
duuuuuuuuuh

It was fun to spot that there are about a total of, maybe, 20 people's names in the credits of these episodes. Most of them are musicians. Better value than the hundreds who seem to be needed to make cartoons today.