Q.E.D. is an album of contemporary classical music by guitarist Terje Rypdal recorded in 1991 and released on the ECM label in 1993.
Reception
The Allmusic review by Paul Collins awarded the album 3 stars stating "Rypdal often alternates sections of great dissonance with near silence, or lonely sustained notes by just one or two instruments. It can have the sweeping starkness of a tracking shot over a fjord, but there's a certain coldness to it as well, and even confirmed fans of his jazz work may take a while to warm up to it".
Track listing
All compositions by Terje Rypdal
"Quod Erat Demonstrandum (Opus 52): 1st Movement" - 4:56
"Quod Erat Demonstrandum (Opus 52): 2nd Movement" - 2:20
"Quod Erat Demonstrandum (Opus 52): 3rd Movement" - 4:55
"Quod Erat Demonstrandum (Opus 52): 4th Movement" - 4:52
"Quod Erat Demonstrandum (Opus 52): 5th Movement" - 18:21
"Largo (Opus 55)" - 16:47
Personnel
Terje Rypdal — electric guitar
Borealis Ensemble — conducted by Christian Eggen (track 1)