There are several artists with this name:
1) Cassandra is a duo formed in early 2014 in the city of Curitiba by Daniel Silveira (bass and voice) and Karina D'Alessandre (Drums). Cassandra is inspired by the character from Greek mythology who predicted tragedies after being cursed and finally dying like mad. Among the few influences, it passes through Sludge and Post-Metal, creating a dense and heavy experimental sound, always sung in Portuguese.
2) Cassandra is an Italian eurodance artist who has released the song "O-La O-La (Hola-Hola)" in 1999. The song is energetic and has a tropical vibe. No more songs were released by her.
3) Cassandra is a Spanish bubblegum dance artist who has released 5 songs. Often she is confused with the Italian artist due to both of them making bubbly dance music. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.