Hi Ray,

I think your vocal is sitting right where it should in the mix, wouldn't call it upfront.
Bass sounds great, and I like the lick you are playing on the guitar, nice hook.
Organ sounds awesome!!
I'm missing the obvious reference you mention and you have me curious, late 60's is when I first started really getting into music.

Sounds great so far (listened to mix3) looking forward to seeing where you take it.