The design used an old version of the Columbia Records logo because George Hunter believed it fit better with the feel of the rest of the cover.

The group's signature song "White Bird" was inspired by the experiences David and Linda LaFlamme had while living in Seattle, Washington.

For a few weeks in December 1967 the group members lived in the attic of an old house while playing and rehearsing at a Seattle venue originally known as The Encore Ballroom.

The band's manager, Matthew Katz, had recently assumed control over the club and renamed it "San Francisco Sound".

Lindsay Planer at AllMusic, gave the album four stars out of five, writing: It's a Beautiful Day were no less memorable for their unique progressive rock style that contrasted well with the Bay Area psychedelic scene...It's a Beautiful Day remains as a timepiece and evidence of how sophisticated rock & roll had become in the fertile environs of the San Francisco music scene.