Grabado en Noviembre de 1971. 
Publicado en Febrero de 1972. 

Producido por Ian Anderson y Terry Ellis.

IAN ANDERSON: flute, acoustic guitar, violin, sax, trumpet and voice
MARTIN BARRE: electric guitar and lute
BARRIMORE BARLOW: drums and percussion
JEFFREY HAMMOND-HAMMOND: bass guitar and voices
JOHN EVAN: piano, organ and harpsichord
1. Thick as a brick #1 
2. Thick as a brick #2