Glassy is the debut single album by South Korean singer Jo Yu-ri.

On September 24, Wake One Entertainment announced that Jo Yu-ri would be making her solo debut with single album titled Glassy on October 7.

[2][3] On October 1, the track listing was released with "Glassy" announced as the lead single.

[8] "Glassy" was described as a dance-pop song with "lively and catchy melody" and characterized by Jo Yu-ri's "charming voice".

[9] "Express Moon" was described as a medium-tempo song with "impressive warm yet powerful instrumental tune" and "romantic melody".