That "Wow" Moment!

So I am at my local record shop store. Retired pharmacist. Had a big collection. Decided to open a brick and mortar business. Great couple and I love going there once a week and spending my money to support them. My panacea. Anyways there is an album on his system and my ears/brain immediately tune to it and ask "Who is this"? He says the name of the band whom I have never heard of before today. I say, "Will you sell it"? He says, "Sure". I bring it home and put on my system and it is a "You have got to be kidding me moment". Wow! Weren't they outstanding! Savoy Brown is the band. "Looking In" is the album from 1971. Please chime in on your similiar experiences of discovering a sound you didn't know was out there.