I was sorry to hear that Kenn Cox had passed.  I heard him play many times through the years, most recently at 2 Donald Walden tributes this year, the 1 song set at the Detroit Festival of the Arts (called on account of thunderstorm) and the set at the Detroit Jazz Fest, he sounded as great as ever.  I went through my CD collection, found a few CDs with Kenn Cox 
 that I wanted to mention: 
Sam Sanders, The Gift of Love, Kenn Cox on 2 tracks 
this is a bit of a stretch, never had a CD release, I had a professional transfer of the LP to CD, this is one of my very favorite jazz albums 
Danny Spencer & Friends, Live at the DIA, 2000   
this is a 2 CD set including Kenn Cox and Phil Lasley, recorded August 12, 1983 at the DIA.  not a bootleg!  found it at a Detroit Jazz Fest, includes "So Be It" a Kenn Cox composition 
Donald Walden, A Monk and a Mingus Among Us (Jazzworks, recorded 1996-1997)  Kenn Cox plays on Mingus' "Peggy's Blue Skylight"  this was mentioned previously in the thread, but not by title 
Donald Walden and the Detroit Jazz Orchestra, Focus: The Music of Tadd Dameron  (Emanon, 2003) 
recorded live at Bert's on Broadway, Detroit Jun 18 &19, 2002 
Francisco Mora Catlett, River Drum (ler Cru, 2005)  Kenn Cox plays on all but 3 tracks 
Message from the Tribe: An Anthology of Tribe Records: 1972-1977 
Has the Phil Ranelin track "Vibes from the Tribe" that Kenn Cox played electric piano on 
and a CD that he didn't play on: Marion Hayden, Visions (Equinox, 2007) includes a lovely version of his "Buhaina" 
Listening to the Blue Note CJQ CD right now. 
Roger Silverstein