That really is an orchestra:
https://www.youtube.com/watch?v=2CNY3-gkw74
NELS CLINE: electric & acoustic guitars, lap steel, effects
DEVIN HOFF: contrabass, bass guitar
ALEX CLINE: drumset, percussion
STEVEN BERNSTEIN: trumpet, slide trumpet, flugelhorn, alto horn
TAYLOR HASKINS: trumpet, flugelhorn, valve trombone
MICHAEL LEONHART: trumpet, flugelhorn, cymbalon, celeste
ALAN FERBER: trombone, bass trombone
CHARLES PILLOW: C, alto, & bass flutes, oboe, English horn, alto saxophone, Bb clarinet
JD PARRAN: C, alto, & bass flutes, Bb clarinet, alto clarinet, baritone & bass saxophones
BEN GOLDBERG: contra-alto clarinet, Bb clarinet
DOUGLAS WIESELMAN: bass clarinet, Bb clarinet, tenor saxophone
GAVIN TEMPLETON: Bb clarinet, alto saxophone
SARA SCHOENBECK: bassoon
JULIAN LAGE: acoustic & electric guitars
KENNY WOLLESEN: vibraphone, marimba, percussion
ZEENA PARKINS: harp
YUKA C HONDA: celeste, Juno 60
ANTOINE SILVERMAN: violin
JEFF GAUTHIER: violin
AMY KIMBALL: viola & violin
STEPHANIE GRIFFIN: viola
ERIK FRIEDLANDER: cello
MAGGIE PARKINS: cello