(RBW Entertainment)

Girl quartet Mamamoo heralded their single release on Sept. 21 with a teaser photo through official social network accounts Monday.

The forthcoming digital single, dubbed “New York,” as well as subunit tracks “Angel” and “Dabdab,” are parts of the girl group‘s effort to release the upcoming full-length album in October, according to RBW Entertainment.

“Angel” and “Dabdab,” first premiered in their August concert in Seoul, were released on Aug. 31.

Mamamoo members showed off their new hairstyles in the teaser image, with Solar making the most dramatic change.

By Son Ji-hyoung (json@heraldcorp.com)