There are at least TWO musicians using the name "Glenn Jones." (1) Glenn Jones the acoustic-folk guitarist, who is both a solo folk artist and a member of the Boston-based band "Cul de Sac." (2) Glenn Jones the R&B, soul singer from Jacksonville, Florida.

(1) http://myspace.com/glennjonesguitar
From myspace: Since 1989, Glenn Jones has led Boston’s “avant -garage” instrumental rock band, Cul de Sac, whose musical adventures are documented on nine albums to date, including a soundtrack for cult-director Roger Corman, and collaborations with guitarist John Fahey and former Can vocalist Damo Suzuki.

In 2004, Jones stepped out of the long shadow cast by Takoma’s guitar visionaries and offered his own "new possibility" -- This Is the Wind That Blows It Out -- for Strange Attractors Audio House. Its release was followed by a month-long tour of Europe with guitarist Jack Rose. Jones has since shared bills with Steffen Basho-Junghans, Max Ochs, Matt Valentine / Erika Elder; along with Rose, he’s toured with Peter Lang, and with some of the best of the new breed of solo guitar upstarts: Harris Newman, Sean Smith, and James Blackshaw, among others

(2) http://en.wikipedia.org/wiki/Glenn_Jones