Arias are a type of vocal solo in opera and other forms of classical music. They are usually accompanied by an orchestra and feature a single singer performing a melodic line. The two crossword solutions for the term ARIAS, E.G. are SOLI (4 letters) and SOLOS (5 letters). SOLI is a musical term meaning 'sung by one voice' and SOLOS is a musical term meaning 'sung by one person'. Both terms refer to the same type of vocal solo, but SOLI is more specific as it implies that only one voice is singing.