A second sex tape featuring Kanye West has emerged. The rapper is facing more embarrassment as another X-rated video is allegedly being shopped around which shows him participating in a 40-minute lovemaking session with a beautiful brunette.

Kanye was "freaking out" after the first tape emerged last week, featuring him and girl who looks like his current girlfriend Kim Kardashian, and this second recording is double in length.

"Both tapes are impressively long - the first is roughly 20 minutes and the second is more than 40. And we're talking constant action. Seriously, the guy takes no breaks. It's incredible," TMZ reported.

Both tapes were made before he started dating 31-year-old Kim - who was catapulted to fame after becoming the unwitting star of her own sex tape in 2007 when her ex-boyfriend Ray J released the recording.