My husband and I own a karaoke company. 9 weeks ago we were able to replace a song that would not properly digitize for us it was a song that had been a crowd favorite for me to sing 4 years ago (Those Were The Days...Dolly Parton) knowing that I had not been singing much over the last couple of years due to a back injury I asked him to drop the key for me by 3...I could not sing the song...my breath gave out and I came nowhere close to hitting the high notes...it was embarrassing ....fast forward to 2 days ago (almost 7 weeks after switching to vapeing) I decided to try the song again...had him drop the key by 1 and hit every note and lost no breath... I was also able to sing Hot Rod Lincon ...Commander Coty without missing a single syllable.....Priceless