Albums that define what most bands are to you.
The Australian hard rock band band, "The Angels" released the their album" Face to Face" album in1978
Guns N' Roses released their "Appetite for Destruction" album in June, 1987.
Red Hot Chilli Peppers, released their album "Blood Sugar Magik" on September 24, 1991
Those 3 albums by the artists are their "Sound/who they are" band. Also all three were strong albums without any "weak" tracks that may not have been hits, but tracks you rarely skip.
What are your defining band albums?