Simone Johanna Maria Simons is a Dutch singer. She is best known for being the lead singer of Dutch symphonic metal band Epica, which she joined at the age of seventeen, releasing eight studio albums and touring the world. In her singing career, she has also collaborated with bands such as Kamelot, Leaves' Eyes, Primal Fear, Ayreon, and Angra. She also has a side pursuit as a lifestyle blogger, via her website SmoonStyle.

Symphonic metal is a cross-generic style designation for the symphonic subsets of heavy metal music subgenres. It is used to denote any metal band that makes use of symphonic or orchestral elements. The style features the heavy drums and guitars of metal with different elements of orchestral classical music, such as symphonic instruments, choirs and sometimes a full orchestra, or just keyboard orchestration.