Elina Duni: voice, piano, guitar, percussion

Robin Williamson: vocals, harp, guitar, whistles
Mat Maneri: viola, violin
Paul Dunmall: tenor and soprano saxophones, clarinet, border pipes, ocarina, moxeño
Ale Möller: mandola, lute, hammered dulcimer, shawm, clarino, drone flutes, natural flutes, bamboo flutes, vibraphone
Mick Hutton: double-bass

Cymin Samawatie: voice, Benedikt Jahnel: piano, Ralf Schwarz: double-bass, Ketan Bhatti: drums

Dorota Bárová: cello, Tomáš Reindl: percussion, Pavel Hrubý: bass clarinet

 Jaroslav Šimíček – music, Petr Motýl – words

Dana Šimíčková – soprano, Marta Marinová – alto

wrgha POWU orchestra 
Nina Marinová – violin, Milan Jakeš – violin, Ilia Chernoklinov – viola, Šimon Marek – cello, José De La Hoz – guitar, Tomáš Sýkora – piano, leader, Vlado Micenko – double bass, Dušan Navařík – flute, Petr Mikeš – percussion, Michal Šťulík – accordion, Jakub Šnýdl – clarinet, Petr Beránek – trumpet
 

Mona Boutchebak: vocals, oud; Jon Balke; piano, keyboards, percussion; Derya Turkan: kamanche;  Pedram Khavar Zamini: tombak; Helga Norbakken: percussion; Bjarte Eike: baroque violin; Alison Luthmers: violin; Øivind Nussle: violin; Milos Valent: viola; Per Buhre: viola: Torbjørn Köhl: viola; Judith Maria Blomsterberg: cello; Mime Brinkmann: cello; Johannes Lundberg: bass 

American Roots in a Nordic mood: "Trail of Souls" links the American gospel and spiritual tradition with the Norwegian sound aesthetic.