TRESPASS

This is the album that finally led me to love Genesis. I think I'd heard all of the Gabriel-era albums and found them uninteresting, until I listened to this one and fell in love with "White Moutains" and "The Knife". "Dusk" is also a great song, it's worth comparing it to the demo recorded before Genesis turned prog, you can find it on their Archives 1968 release. I guess it's the most accessible prog-era album from Genesis, and it's a good starting point if you tried "Supper's Ready" and found it a little bit too weird for your taste. (Well, the best starting point would probably be Steve Hackett's "Voyage of the Acolyte", actually.)