With more than 30 albums to their credit and sales totaling more than 50 million, Jethro Tull is one of the most successful rock bands of all time. Led by Ian Anderson, the British progressive rock luminaries released their latest album, The Zealot Gene , last month. We sat down with Anderson, the flute and voice behind the group, remotely, to hear all about the twelve-track record, the group's first studio album of new material in over 18 years.