I've gotten myself into a bit of a predicament. As I am in the process of starting my own band, I recently reached out to a monster keyboard player (I'll call him "Herbie") whom I've played with before in the past, and got along with quite well on a personal level. Based on his current music projects and day job, I didn't expect him to accept the gig, but felt I had to put it out there, as he is such a truly special player. Later that same day, I did a "cold call" on another great keyboardist ("Joe") whom I've never worked with, and don't know personally, but whom I've admired as a player for years, and I knew he was looking for a gig. A guy with mega industry experience, and formerly in a hugely popular band. Well, he got back to me almost right away and said he found my vision for the band very interesting. And while he expressed extreme interest and said I could pencil him in, he fell short of a full commitment, and said he'd touch base with me later over the weekend. Well, lo and behold, several days later, I finally heard back from Herbie, and to my astonishment, he was totally gung ho to join my band. Unsolicitedly, he offered to write charts and organize things. Massive enthusiasm, everything you could want. Meanwhile, the weekend came and went, and Joe still hasn't gotten back to me. Fortunately, Herbie is pretty chill and is not the kind of guy who requires immediate email responses, so, while I sort this out, I have held off on telling him how excited I am that he accepted my offer. Right now, I am leaning strongly toward Herbie, and wish I hadn't contacted Joe. Obviously, this situation was my own doing, but what should I tell Joe? I don't want to burn any bridges. (Just to clarify, he's a great player, but he may not work out anyway, as we don't know each other, and may not have the right chemistry.) Thanks guys!