"Gemma" Can Refer To At Least Three Artists. 1 Gemma 젬마 Stylized As GEMma Is A South Korean Singer Who Debuted Independently In 2019. 2 Gemma Is Felicia Douglass Of Ava Luna And Erik Gundel. 3 Gemma Is Also A Six-Piece Indie Band Playing Dreamy Music They Frequently Describe As "goth Country."