whenever he plays fireflies, the intro is always sunburn intro. The owl city intro is meant for piano. Sunburn intro was his attempt to play it in guitar w/ rhythm :D he is a musical beast! hahaha
Not exactly a lot of auto tune on any of his stuff tbh Just vocal layering ( I guess it makes sense that people who haven’t spent a lot of time in the studio wouldn’t really hear a difference)
He is very talented, yes. But this arrangement of the song is in a different key from the original, making it much easier to sing. And when he does play the song in the original key in his full-band live performances he uses real-time pitch correction gear to get his voice as 'perfect' as it sounds in the studio. Perhaps a TC Helicon Voice Correct.
"Owl City" is a one man band, the extra-instrumentals are done by people who are just filling the void where some computer work would be done when he is performing live (granted, some he picks more than others). Apart from that, Owl City is a singular person band. Adam is Owl City.
