The crossword solution for the term 'Calliope Colleague' is ERATO, which is a five-letter word. ERATO is one of the nine Muses in Greek mythology, and was the Muse of lyric poetry. She was the daughter of Zeus and Mnemosyne, and was often depicted with a wreath of myrtle and roses, holding a lyre. As a colleague of Calliope, the Muse of epic poetry, ERATO was responsible for inspiring lyric poets and musicians.