I'm arranging it in the key of Am, just like the original song. Performances and karaoke tracks are also available separately from each company. The length of the song is the same as the original.
Solo & Back Tracks:
https://music.youtube.com/playlist?list=OLAK5uy_kERc8gF7xMIU46haGXsBB2uzl4yDvQb3I