Let's start jamming Martin Garrix - Oops chords, practice the chord sequence G#, B, C#, D#m, F#, B, F# and D#m. A good strategy is to initiate at 64 BPM and then accelerate to the track's regular speed of 128 BPM. Considering your vocal pitch and chord choices, adjust the capo in accordance with the key: C# Major.