Radioactive Chords by Pentatonix, Lindsey Stirling

To learn Pentatonix, Lindsey Stirling - Radioactive chords, these are the chords to practise in sequence: Ab, Eb, Bbm, C#, Ab, Bbm, Ab and Bbm. A strategic approach would be to train at 67 BPM initially, and then accelerate to the song's tempo of 135. Tune your capo to accommodate your vocal range, referencing the song's key: Ab Major.