<Tr> <Td> </Td> <Td> "Mirrors" (2013) A 29 second sample of "Mirrors". It features emo power ballad guitar strobes, hand - claps, orchestral flares, electro blips, chipmunk synth chirps accompanied with "vocoder - squawk backing vocals". </Td> </Tr> <Tr> <Td_colspan="2"> Problems playing this file? See media help . </Td> </Tr> <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> Brad Stern of MTV Buzzworthy wrote that it is hugely catchy and contains melodies that have arena - size . Paste's Lauren Martin described it as "Coldplay - does - R&B", while according to Raible, "Mirrors" is a sad answer to Natalie Imbruglia's 1997 single "Torn". Mikael Wood of Los Angeles Times described it as a cross between Timberlake's 2002 single "Cry Me a River" and "November Rain" by Guns N' Roses . </P>

What key is mirrors by justin timberlake in