On the Cool Side was one of Sidran's first commercially successful solo releases, receiving significant airtime on contemporary jazz stations at the time.[2] It was also his first album to use electronic instruments, including drum machines and a Yamaha DX7 synthesiser "to capture the spirit of the times".[3]
Some album releases were pressed on translucent black vinyl.[4]
Writing for AllMusic, Jim Newsom commented the "music on this recording is heavily electronicized [..] but it sure sounds like a lot of fun." He summarised the eponymous track as "a classic of the genre, an upbeat, joyous affirmation of life, featuring a backing vocal from old pal Steve Miller [..] you'll find yourself walking down the street singing "keep on searching, keep it on the cool side" with a big smile on your face."
Newsom also praised the renditions of "Lover Man", "Heat Wave" and "Up a Lazy River" with Sidran's new "funky" elements.
Track listing
Side one
No.
Title
Length
1.
"Mitsubishi Boy"
5:13
2.
"Lover Man Part 1"
2:57
3.
"Lover Man Part 2"
5:02
4.
"Brown Eyes"
3:55
Side two
No.
Title
Length
1.
"On the Cool Side"
5:50
2.
"Old Hoagy"
3:40
3.
"Heat Wave"
3:55
4.
"Up a Lazy River"
3:40
Personnel
Billy Peterson – bass (on "Lover Man Part 1" and "Lover Man Part 2")
Howard Arthur – guitar (on "Mitsubishi Boy" and "Brown Eyes")
Paul Peterson – synthesizer (on "Lover Man Part 1" and "Lover Man Part 2")
Ricky Peterson – synthesizer, keyboards, backing vocals (on "Brown Eyes")
Mac Rebennack – backing vocals (on "Up a Lazy River")
Steve Miller – backing vocals (on "On the Cool Side")