I'm a singer who recently switched to vaping to help my voice after joining a new band and becoming the lead female vocalist. I will say that my range has increased almost to where it was before I began smoking, and my breathing has improved, though I would say that it hasn't been a dramatic increase for me personally. I smoked for 10 years at about a pack a day and I never stopped singing, so it's possible that I kept my lungs exercised over the years, but I have noticed a small increase in my ability to sustain notes with power. I strongly suggest drinking a LOT of water if you sing or perform. Vaping seems to dry out my throat more than cigarettes did, but smoking made my voice sound scratchy sometimes, which works to my advantage when performing rock songs, but doesn't help me out with the prettier songs! lol Vaping has definitely been easier on my vocal chords than reg cigs and I will never have another cigarette ever!