Jethro Tull HEAVY HORSESJethro Tull: Ian Anderson (vocals, guitar, mandolin, flute); Martin Barre (guitar); John Evan (piano, organ); David Palmer (portative pipe organ, keyboards); John Glascock (bass); Barriemore Barlow (drums). Additional personnel: Darryl Way (violin). Recorded at Maison Rouge Studio, Fullham, London in January 1978. All tracks have been digitally remastered. HEAVY HORSES brings together the best elements of Jethro Tull's sonic arsenal: heavy guitars,