Joe Walsh said recently that he’s been working with AC/DC’s Brian Johnson but did not offer further details. Walsh and Johnson were photographed together with the caption ““Great day making music with my old pal Brian today in London. We nailed it! Love ya man!”

Some fans are speculating that Walsh and Johnson are recording a full version of a song they worked on during an episode of Walsh’s show, Life On The Road.

Read more about their collaboration here.