I love isolated vocal tracks from bands that performed before there was auto-tune.
Straight vocals, no tune bending bullshit. Pure talent. Here's some cool examples of songs I grew up with and still love -
Hope you dig em - and if you find some out there on the internet- send em my way! firstname.lastname@example.org
The Beatles - Lennon and Mccartney on "If I Fell"
Boston's "More Than A Feeling"
Marvin Gaye's "Heard It Through The Grapevine"
God Only Knows by the Beach Boys
Queen's "Somebody to Love"!