6 Missing Letters

Fill the blanks with 6 different letters to read a meaningful sentence.

A _losopher of _sic in _na _ght about the _ances of _tch.

You should add the 6 Greek letters φ (phi), μ (mu), χ (chi), τ (tau), ν (nu), π (pi), and get the sentence:

A philosopher of music in China taught about the nuances of pitch.