It is quite hard to define the structure of Release overall. It is essentially a series of verses and solos but there are distinct build-up sections characterised by the rising chromatic line (loop 10). The bass often drops out at this point and they act like a rise in EDM.
This outline may be useful but many of the characterising music passages are often used and looped in multiple sections. Overall this unpredictability gives the piece sophistication and allows it much variety and contrast, keeping the music interesting and original.
Introduction 1 - Free time (0'00-0'50)
Introduction 2 - Tempo starts, vocal melismas (0'50-1'38)
Verse 1 - Female vocals (1'38-2'35)
Interlude - Bass introduced, loop 12 (2'35-2'55)
Verse 2 - Male vocals in Irish (2'55-3'32)
Rise - Male vocals (3'32-3'52)
Uilleann Pipe Solo (3'52-4'11)
Low Whistle Solo (4'11-4'35)
Hurdy-gurdy Solo (4'35-4'54)
Verse 3 - Female vocals with reels (4'54-5'33)
Rise - Male vocals (5'33-5'52)
Interlude (5'52-6'59)
Verse 4 - Female vocals - (6'59-7'16)
Outro - electric piano loops with fade out (7'16-end)