There seems to be quite a bit of evidence floating around today indicating Rihanna may have shot a new music video with Drake last night in Los Angeles. While not confirmed, the song is reportedly called "Work" and sounds like a down-tempo, syrupy dancehall ballad that will likely land on Rihanna's upcoming album, ANTI.

The speculation kicked off earlier this week when a leaked casting call sheet linked the two names together. Interestingly enough, a call for horseback riders was listed among a few other roles. Then, earlier this morning, several Twitter users claimed they spotted Rihanna and Drake at Eagle Rock Plaza in Los Angeles. While no photos of the two surfaced online, there were a few pictures that were taken at Eagle Rock, as well as a few audio snippets of the collaboration.

DJ Khaled gave further credence to the theory that something big was in the works when he posted an Instagram video overnight of himself seated next to Drizzy. "I'm up to something," Khaled said in the short clip. "Major," Drake added. Khaled hosted a club night at Playhouse in Hollywood last night, which makes the L.A. connection. To add fuel to the fire, Rihanna was also spotted at LAX yesterday with a whole bunch of luggage in tow.

Here's the casting call sheet.

To go along with a number of sightings by fans on Twitter.

Here's Khaled's Instagram post from earlier this morning.

A few snippets of the song were even captured.

We reached out to a rep for Rihanna and will update when available.