how many collaborations did key release during 2010?
3
Year Album Song Duration Artist
2010 TRAX Mini Album Volume Up "Healing" with TRAX
2010 Oh! "Boys & Girls" with Girls' Generation
2010 1st Asia Tour "Into The New World" "Barbie Girl" Duet with Jessica
2012 History of Salary Man OST "Bravo" 03:12 Duet with Leeteuk
2012 One Dream (Single) "One Dream" 02:29 with BoA & Henry
2012 MAMA "Two Moons" 02:59 with EXO
2012 Only One "One Dream" 02:29 with BoA & Henry
2014 Toheart "Delicious" Duet with Woohyun from Infinite
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