Apsaras

Apsaras are celestial nymphs, dancers who entertain the gods and the inhabitants of Indra’s Heaven, and are the sensual rewards of kings and heroes who die bravely.

In Hindu mythology they always performed with the celestial musicians, Gandharvas, but in Khmer mythology they were elevated alone to special importance in temple decoration.

To understand the distinction between apsaras and devatas, please see 'You say Apsara, I say Devata!'.