He's just released his second solo album, Homo Erraticus, which sees him using his Gerald Bostock character for the third time. It first appeared on 1972 Tull release Thick As A Brick, then returned on Anderson's_ Thick As A Brick 2_ in 2012.

He tells Billboard: "To me, Jethro Tull is the vast body of repertoire - the record catalogue, the music. If we look back on it, it kind of came more or less to an end during the last ten years or so, with a couple of live albums and a studio album of Christmas material. That might define the last albums under the name Jethro Tull.