Cello,Instrumental Duet,Violin - Level 3 - Interactive Download SKU: A0.1472752 Composed by Tyler James Cook (ASCAP). This edition: Interactive Download. Classical. 4 pages. Duration 75. Tyler James Cook #btWlpqmz0G9u8cOOFHuMM. Published by Tyler James Cook (A0.1472752). Key: G major.Angularity is a violin and cello duet that explores seventh intervals (in 7/8 time). Each piece on 7??Heptadic Structure7?? consists of 21 measures, for a total of 147 measures of written music. 14 + 7 = 21, and 21/7 = 3. 3 represents the Holy Trinity, and 7 represents God's Divine Number. Listen to and/or purchase 7??Heptadic Structure7?? here: https://tjcookmusic.bandcamp.com/album/heptadic-structure.