This article is from the The Osbourne FAQ, by Mike L. with numerous contributions by others.
Jim Simpson was a musician who played jazz trumpet. He was also the manager
of a Brummie band named 'Bakerloo Blues Band'. Unable to find a place where
he could promote the band, he opened his own place called "Henry's
Blueshouse". Henry's, located at Hill Street and Station Road was an
instant success. It wasn't before long before the club had to stop
accepting new bands. A band that was just starting out, Led Zeppelin, would
also be one of the first bands to play Henry's.
In 1969, the four members of Earth approached Jim and asked if they could
play at Henry's. They also wanted him to be their manager since they knew
nothing of the business sense of things. He told them that they could open
for the band 'Ten Years After', which pleased them. Happy to have a manager
who supposedly cared for their interests, they recorded a song in tribute
to him, "Song for Jim". The song was a spoof of their manager and the jazz
music he played. This elusive song is still sought after by Sabbath fans
worldwide. Simpson would also give the band some of his jazz records to
inspire them to write songs.
It is of interest to mention that around this time, Tony left to join
Jethro Tull. While Tony did not appear on any of Tull's albums, he did make
an appearance at the "Rolling Stone's Rock and Roll Circus" which was never
released, because the Stones were upstaged by other acts. Tony and Jethro
can be heard on a bootleg called "Archangel Rides Again". The movie was
eventually released in the movie festival circuit.
Tony's stint with Jethro Tull was very brief (for two weeks). He left Tull
and was soon back in Earth.