William Luther Johnson (September 30, 1912 – July 5, 1960) was an American alto saxophonist, clarinetist, and arranger.
After working with lesser-known bands he studied in conservatories in Wisconsin and Illinois, then attended Marquette University.
There's a record on Alert from around mid-1946 by "Bill Johnson and Orchestra," which is the beginning of his subsequent group, the Musical Notes.
The song was "If I Was A Itty Bitty Girl," with vocals by Grace Smith (who had a couple of subsequent releases on National and Avalon).
Johnson was diagnosed with lung cancer in 1957, which caused the breakup of the group, although he re-formed it on a couple of occasions.