PG, I didn't know you were into a astrology (tho I'm not surprised). Of course you're Air!
Interestingly, while Bobby's sun is in Libra, his moon, Mercury, Venus, and Jupiter are in Scorpio. I would expect a bit more reticence to share his trade but Mars is in the playful, 'look at me' sign of Leo.
I'd like to see a full write up of each band member's natal chart and how they interact. Perhaps I will do it...