The 'Lego House' singer is currently recording the follow up to his debut album, '+', in Los Angeles where he had a ''nuts'' couple of days collaborating.
He wrote on Instagram: ''Another great day making music. This time me, the game and rudimental. Nuts (sic).''
He later added: ''6 songs done in 2 days with @RudimentalUk and @thegame. Awesome (sic)''
Game - who is a protege of Dr. Dre and is a former member of 50 Cent's G-Unit rap crew - was also impressed with the session, tweeting: ''Just made a Classic record with the homie Ed Sheeran...!!!!!!! One of the dopest sessions in my life (sic)''.
Rudimental also posted a picture from the session, with a caption saying ''Only in #LA!!''
Ed has previously said he's narrowed down 50 prospective tracks to 12 for his new album, but ruled out duetting with his friend Taylor Swift, who he is currently on a US tour with.
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