The crossword solution for the term 'John in the Albert Hall' is LOO, which is an abbreviation for lavatory. The phrase 'John in the Albert Hall' is a reference to the popular British song 'John in the Bathroom', written by the band Madness and released in 1982. The song is about a man named John who is stuck in a bathroom at the Royal Albert Hall in London. The song is a humorous take on the idea of being stuck in a public restroom.