Karissa Shannon Superstar is hitting stores tomorrow ... and the two stars of the "kinky" sex tape are not only spending time in the bedroom, but also spending long and late hours in the recording studio.

X17online exclusively has learned that Karissa Shannon and Sam Jones III are planning on releasing an album together. Let's face it ... the six figures the couple received from Vivid Entertainment should be enough to pay for pricey studio time. Karissa Shannon ... pop star or rapper? Could be interesting.

So far, the two sex tape stars have used their porn payout by splurging on a black Rolls Royce Phantom.

In addition to the album, Sam will also be appearing in an upcoming episode of The Defenders opposite Jerry O'Connell and Jim Belushi.

As for the sex tape, Steven Hirsch tells us, "It's amazing how many fans each of them has and apparently they are very eager to see this movie."

With the number of copies already pre-ordered, Hirsch adds, "Karissa Shannon Superstar will be one of our biggest sellers ever."