1.Rambha, 2.Urvashi, 3.Menaka, 4.Tilottama, 5.Ghrutaachi are the popular beauty angels in the court of Indra (king of heaven). These angels sing and dance to entice people. Indra sends these angels to distract saints who are doing tapasya.
These angels are devotees of Divine mother and worship her always.
A secret is being revealed here. When you start meditation with a goal of moksha(liberation), you should shut down the senses and start concentrating on Kootastha (center of eyebrows). It takes some time to drawback minds attention completely away from the world. In the meantime, the mind keeps recollecting all the sweet memories and beautiful worldly experiences. This is the byproduct of closing the senses and keeping the mind alone. If mind is Indra, these thoughts are like these beauty angels. They distract you. Move you. As a result, you find it hard to meditate. But those who pray Divine mother will overcome this obstacle very easily. Because these angels pray Her and, on Her command, they stop bothering you.