Rapper Kid Cudi had no idea he had landed a feature on Kanye West's album Yeezus until fans alerted him to his guest appearance following its 2013 release.

The Day 'n' Nite star parted ways with West's G.O.O.D. Music label last spring (13) after five years together, and Cudi admits he was more than a little confused when he discovered his vocals had been used on the Stronger hitmaker's song Guilt Trip.

He tells Complex magazine, "The vocal that I did on that song was a couple years old...

"I discovered that I was on the song via Twitter. I saw kids hitting me up, like, 'Are you on Guilt Trip?!' or saying 'Great job!' and I'm like, 'What the f**k is everyone talking about?"

Cudi reveals he recognised the beat of the track as soon as he heard it and although he was initially honoured, his pride soon turned to anger.

He explains, "Part of me was flattered, like, 'It's kind of cool that he thought of me'. Then I started thinking about it more. It was like, 'Why not call me and have me come in there and give it (sing it live)? Why underuse me? Why put four bars of vocals to coax my fans into thinking this is a legitimate Kid Cudi feature on this song and it isn't...?'

"It's weird. I don't know how to feel but I would've much rather been off that song. I don't care to be on people's songs like that, unless it came from a legitimate session where we're all vibing and have an idea."