Ananova:

Eminem has hit back at claims he mimed on American TV show Saturday Night Live.

Eminem insists he sang over a vocal track reports IMDb.com.

Newspaper reports claimed the rapper lip-synced to his new single Mosh just a week after pop star Ashlee Simpson was caught miming on the very same show.

A studio source said, "He was singing Mosh and you could tell he was lip-synching.

"The track was just a bit ahead of his lips and he put the mike down at one point but the track kept going."

But a representative for Eminem insists he was trying to "duplicate the sound on his album."

He said: "He had a vocal track on for double vocal effect on the first song, to make it more powerful. Lots of hip-hop artists do that. Tupac Shakur did it."