Concerning the vocals, are you the lead singer?
No, I am not the lead singer.
Barry gets credit for that role. We grew up together and to be honest; he says I mentored him, but I feel like I ride his coat-tails historically.
Second, where the voices sing in harmony, are they the voices of different members of the band, or were they only your voice, but duplicated and blended into the mix?
Harmonies/doubling on vocals; in any example it may be he or I on harmonies, I'd have to go song by song or part by part to detail. Sometimes we doubled his voice and sometimes we added others. Usually when we played 'live' though, those harmonies fell on me.
'Sweetness' is the oldest mix of the bunch I listed above. It was a lot of fun.
The sampled donkey made me laugh at the time, and Barry's sax line led right into it so well .. that's really what allowed it to work.

Thanks for taking the time to listen.