Under the Blue Moon is a concept album released by R&B/pop group New Edition on the MCA label on November 24, 1986 (see 1986 in music). Their fourth album and third with MCA and first album after New Edition member Bobby Brown was voted out of the group, the group was going through a transitional phase during this period. It is the their only album as a quartet. The album reached number 43 on the Billboard 200, and number 18 on the R&B albums chart.
According to the group members in a recent documentary, a reason why New Edition released so many albums between 1984's New Edition and this album, after selling over two million records of New Edition, they discovered they were not signed to MCA the label per se, but to a production company named Jump-Shoot Productions, which also had inked a deal with MCA. Shelving money they earned from touring, they often went back in the studio to renege their deal with Jump-Shoot and eventually re-signed with MCA.
The album went gold based on the airplay of their cover of the seminal 1950s hit, "Earth Angel", which was featured off the soundtrack of the first sequel to The Karate Kid. In the video, the boys pursue a hard-to-get woman, who has no idea that the boys singing to her and trying in vain to get her attention are actually New Edition until she catches them signing autographs for female seekers and finds out too late as the band heads back on their limo. This would be the group's final album while negotiating with MCA, with which they would later re-sign with.