Percewood's Onagram (1969–1974) was a German-American band founded by Wolfgang Michels based in Bremen, Germany.

In May 1968 a very young German musician named Michels with the pseudonym "One Plus None" had a #2 BBC London chart hit[citation needed] with "Desert Walker", a song he produced himself, which was topped only by the Rolling Stones at #1.

Alexis Korner, “the father of the white blues”, and the man who discovered the Rolling Stones, then invited Michels to London and took him under his wing.

[citation needed] After the band split up, Michels returned to London where he appeared at the Marquee Club, among others.

He later moved to San Francisco and, as the first German musician in California/USA, recorded two solo albums, in collaboration with Neil Young producer & engineer John Nowland, both of which attained a cult following.