The three original, Boeotian muses were Mneme (the muse of memory), Melete (the muse of meditation) and Aoede (the muse of song). 3 ancient Muses considered the source of knowledge were: Aoide (song), Melete (practice), Mneme (memory). Immortalized by centuries of stories in ancient culture as poetic lyrics and myths.
According to Pausanias in the later 2nd century AD, there were three original Muses, worshiped on Mount Helicon in Boeotia: Aoidē ("song" or "tune"), Meletē ("practice" or "occasion"), and Mnēmē ("memory"). Together, these three form the complete picture of the preconditions of poetic art in cult practice.
3 Muses in Delphi: Nētē, Mesē & Hypatē
In Delphi three Muses were worshiped as well, but with other names: Nētē, Mesē, and Hypatē, which are assigned as the names of the three chords of the ancient musical instrument the lyre.
Apollo's Daughters: Cēphisso, Apollonis & Borysthenis
Alternatively they later were called Cēphisso, Apollonis, and Borysthenis, whose names characterize them as daughters of Apollo.