Tuesday, May 23rd, 1967

John's broken finger was causing him a lot of pain and so a recording session at City of London Studios meant that The Who could only put down backing tracks to John's composition 'Someone's Coming'. But they did manage to record a one-minute jingle for American radio endorsing General Foods' instant milkshake called Great Shakes with Keith on lead vocals and John limited to trumpet. The jingle appeared as a hidden coda track on 2009's deluxe edition of The Who Sell Out.
You can listen to "Great Shakes" on YouTube here