Reprise is preparing a two-disc CD/DVD release featuring rare concert recordings of Frank Sinatra, Dean Martin and Sammy Davis Jr. -- aka the Rat Pack. Due Oct. 14, "Live & Swingin': The Ultimate Rat Pack Collection" pairs 1960s performances in Chicago and St. Louis, Mo.

The audio disc is culled from a six-night 1962 engagement at the Windy City's Villa Venice nightclub and features several previously unreleased recordings. In the set's liner notes, author Bill Zehme ("The Way You Wear Your Hat: Frank Sinatra and the Lost Art Of Livin'") alleges that Sinatra staged the shows to repay a favor to notorious underground figure Sam "Momo" Giancana.

The DVD, meanwhile, captures a 90-minute 1965 black-tie charity performance at St. Louis' Kiel Opera House that was broadcast via closed circuit to U.S. movie theaters. Originally titled "The Frank Sinatra Spectacular," the show featured Sinatra, Martin and Davis, as well as Quincy Jones leading the Count Basie Orchestra and Johnny Carson on stage.

"The stunning close-up shots of the mighty revelers all but allow us to share the stage with them, if not actually smell their colognes," Zehme writes in the notes.