Conversation so far:
where did the band Madness form
Madness are an English ska band from Camden Town, north London, who formed in 1976.
Who was in the band Madness
The core of the band Madness formed in 1976 included Mike Barson on keyboards and vocals, Chris Foreman on guitar and Lee Thompson on saxophone and vocals.
Who did the band Madness also recruit
The band Madness later recruited John Hasler on drums and Cathal Smyth on bass guitar. Later in the year, they were joined by lead vocalist Dikron Tulane.
Who came back to the band Madness
Graham McPherson was kicked out of the band Madness for too often choosing to watch Chelsea instead of rehearsing. By 1978, the band had allowed McPherson to return.

Question: when did he leave
Self-contained rewrite: when did McPhearson leave the band Madness