What type of music did Townshend's father play as noted in the memoir, Who I Am?

Swing was a style of jazz music that emerged in the 40s and was what Pete's father played in the wartime and post-war band The Squadronaires. Swing music had a lilting rhythm and a fast pace that could be danced to. Pete's father approved of the new Rock'n'Roll music that was emerging during his son's youth because it had a similar 'danceable' style. Swing music tended to feature a lot of brass instruments and some woodwind, and occasionally violin or guitar, though guitar was not yet really popular in the early 40s when Pete's father was playing. This is perhaps why he does not let himself see Pete's own skill on the guitar.