what means 'correctly'?
people pronounce the Muses the way they heard them pronounced and that's probably was well before they did a deep dive into Homer and Sophocles - and even then a teacher should be like 'this is the way we think this word was pronounced 2500 years ago'
but the question posed by the videos is more 'can you say Ka-le-O-pe when it's the muse and Kally-OPE when it's the street?'
also it's Cl10 not Clio