While “Slowhand” Eric Clapton may not have made it only the “Oldchella” Desert Trip lineup with some of his classic rockin’ contemporaries, that hasn’t stopped the famed guitarist from working on new music. Clapton has a new album, I Still Do, out on May 20th – it will be his first release since a JJ Cale tribute album in 2014.

In celebration of the new release, Clapton recently shared a new song, “Spiral,” on WSJ’s Speakeasy blog. According to the article, the song was completely improvised in the studio, lyrics and everything.

Producer Glyn Johns said, “I have worked with many songwriters where stuff is written in the studio, but very rarely has an entire lyric come out like that… It completely blew me away.”

Listen to the new Clapton jam, “Spiral,” below: