1981 David Bowie and Queen had a big hit with Under Pressure. In an article in The Guardian this week Peter Hince, who was head of Queen's road crew, says he was present in the studio when they recorded the hit song but also more music that hasn't been released so far. Hince describes the music as proper full-length rock 'n roll tracks. Raw but good.
The article go on quoting Neil Cossar, a music historian currently writing a book on Bowie, saying that Bowie and Queen were just jamming in the studio playing covers and some original songs. But everything was recorded.