Do you know the artist that plays on 수고했어, 오늘도?

What chords does 옥상달빛 play in 수고했어, 오늘도?

What is the BPM of 옥상달빛 - 수고했어, 오늘도?

Which chords are part of the key in which 옥상달빛 plays 수고했어, 오늘도?

When did 수고했어, 오늘도 hit the market?