This is The Owl City & Verge, feat. Aloe Blacc. Easy to download the sheets & piano notes here.
About the Scoring
This is a 13-page scoring written in the key of D Major. The arrangement has been adjusted for backup vocals, whistle, piano and voice in range of B3-A5. The song was composed by Adam Young, Aloe Blacc, Emily Wright and Matthew Thiessen.