A shorter version of this Facebook post by Andrew Kastner was posted on the Jack Mack Website. What this adds is the Glenn wanted to include "Somewhere Somebody" on "The Allnighter".
A reminder of Somewhere Somebody: https://www.youtube.com/watch?v=ynVkl0_Mr70

The extra part:
Glenn was like no other. He had all these nicknames like Sportecus because he was a sport fanatic. He also gave all of us what he called our monster names. I think mine was Dave. Your monster name was your alter ego. It was who you became when you were mind was slightly altered. Glenn had several; Duane, X and probably a few more. He was super smart and funny guy but man you didn’t want to be around him when he was pissed off.

While in the studio I wrote a song with one of my writing partners, Larry john Mcnally called Somewhere Somebody. We thought it might be perfect for Glenn so many months later I sent it to him and to my surprise he told me he wanted to record it for his Smugglers Blues album. The band put a lot of pressure on me to not let him do it because we were shopping a record deal since Warner Boros had just dropped us. In those days you needed a great song to get a deal and that one was our best. In hindsight I was foolish telling Glenn he couldn't record the song. I don’t think many people, if any, ever said “no” to him and I don’t think he thought very fondly of me for doing that. Lucky for us Aaron Neville recorded the song and had a number 1 AC hit with it. http://tinyurl.com/grwpu6d.
The credits for the song are given as (Andrew Kastner, Larry McNally, Max Gronenthal). Larry McNally wrote "I love to Watch a Woman Dance".