I made Chlorine by 21 pilots on cello by ear. Some things ik for a fact are incorrect and I am sorry. This song is hard! It's also one of my top 5 least fav keys to play in! I hope you all enjoy it! Like and Follow! I am currently making a 10 follower special! So follow to see that! I added some shifting in for the cello on the D string. The recording does not have that btw. As a cello player, It makes more sense to shift on the D for the higher notes on the A string.