The spelling of the phrase "says one piece" can be broken down phonetically using the International Phonetic Alphabet (IPA). "Says" is pronounced /seɪz/, with the "a" sound as in "say" and a voiced "z" at the end. "One" is pronounced /wʌn/, with a short "u" sound as in "fun". "Piece" is pronounced /piːs/, with a long "ee" sound as in "bee" and a voiceless "s" at the end. Once broken down, the correct spelling of the phrase becomes more clear.