Overtures are a type of musical composition that is typically used to introduce an opera, ballet, or other large-scale musical work. The two crossword solutions for the term 'overtures' are 'preludes' (8 letters) and 'INTROS' (6 letters). Preludes are a type of short piece of music that is often used as an introduction to a larger work, while INTROS are a type of introduction that can be used in any context. Both preludes and INTROS are forms of overtures.