Absolutely.

None.I always listen to what I'm buying first!

Jonas Brothers, I saw a poster of Joe in a magazine and I thought he was so hot, so I went to the store and bought their album.

Bangerz, Red, Speak Now, the last Parachute album
probably some others that I'm forgetting

Every album I bought I don't use streaming and leaks

Outside of top 40 artists, it's easier to do with lesser known or indie artists who don't receive major airplay. Some people here are listing albums that they have obviously heard singles from because, aside from Beyonce, it's pretty impossible not to.

Matt Duke - "singer/songwriter"
Bombay Bicycle Club - "So Long, See You Tomorrow"
Beyonce - "BEYONCE"

Loved all of them too, luckily.

Basically all my albums - like all 300 of them. If I like the singles, I'll buy the album, and I almost never regret it.

But if you mean albums where I didn't hear ANY of them first - no singles or anything - then mostly just the albums I got when I first started getting into music and bands. If I knew a song by an artist (or had an album), and I liked it, I just went ahead and bought the rest of their albums. So:

Green Day: 1,039; Kerplunk; Dookie; Insomniac; Nimrod; Warning; International Superhits; Shenanigans; Money Money 2020; Stop Drop And Roll
Garbage: Garbage; Version 2.0; Bleed Like Me
No Doubt: No Doubt; Beacon Street Collection; Tragic Kingdom; Return Of Saturn; Rock Steady; The Singles; Everything In Time
Kelly Clarkson: Thankful
The All American Rejects: s/t album

lots of others too