Greatest debut album


Mostly listening to rock music from the 60s and 70s, thus I am asking a biased question. My greatest debut album is From Genesis to Revelation by Genesis.  I understand there were production issues in the making of the album but Gabriel's voice is astonishing on this LP.   I wish I could find a live version of Into the Wilderness but can not. Any help in that would be appreciated.  Look forward to hearing others opinions for selfish reasons as I want to grow my collection and appreciate the opinions represented here. 
ricmci
dada - "puzzle"

A great early '90s debut alternative rock record from this Santa Barbara, CA band. Great songs and excellent sound quality. Unfortunately, not available on LP, except for a few rare copies from Brazil and Spain.
Maybe not your style but a phenomenal first album for me was.

Boston s/t.

Not one of their later releases came close to capturing the glory of this one.

Had this on repeat autopilot forever in the student common room!
I can easily agree with a half dozen previously listed LP's.  The first Hot Tuna album, while not a commercial smash, was excellent. 
@tostadosunidos, the bassist in my 1971 band loved Jack Cassidy (and Rick Danko, and Phil Lesh) and the sound he got, so bought himself the same Guild bass Jack played at the time. He was disappointed and frustrated that it sounded nothing like Jack's, and soon learned it was because Jack had replaced the stock flat wound strings with round wound. Expensive lesson! Jack is a very interesting bassist.