<P> `` Mirrors '' is a mid-tempo progressive pop and R&B ballad with an approximate length of eight minutes and five seconds . It is composed in the key of E ♭ major , set in common time and has a moderately slow groove of 77 beats per minute . Timberlake 's vocals span from the low note of E ♭ to the high note of C ( sheet music commonly prints the notes of a melody an octave higher to keep it within the staff ) . The original mix has an instrumentation of emo power ballad guitar strobes , hand - claps , orchestral flares , electro blips and chipmunk synth chirps accompanied with `` vocoder - squawk backing vocals '' , and the orchestra has a noticeable much - lower volume than the percussion and electric guitars . </P>
<P> `` Mirrors '' is a mid-tempo progressive pop and R&B ballad with an approximate length of eight minutes and five seconds . It is composed in the key of E ♭ major , set in common time and has a moderately slow groove of 77 beats per minute . Timberlake 's vocals span from the low note of E ♭ to the high note of C ( sheet music commonly prints the notes of a melody an octave higher to keep it within the staff ) . The original mix has an instrumentation of emo power ballad guitar strobes , hand - claps , orchestral flares , electro blips and chipmunk synth chirps accompanied with `` vocoder - squawk backing vocals '' , and the orchestra has a noticeable much - lower volume than the percussion and electric guitars . </P>
what key is mirrors by justin timberlake in
what key is mirrors by justin timberlake in
E ♭ major
E ♭ major