IPA: /ˌmaɪ.kroʊˈtoʊ.nə.li/
KK: /maɪkroʊˈtoʊnəli/
In a way that involves microtones, which are intervals smaller than a semitone in music.
The musician played the notes microtonally, creating a unique sound that was different from traditional scales.
Microtonally → It is formed from "micro-" (from Greek "mikros", meaning small) and "tonal" (from Latin "tonalis", meaning relating to tone) with the suffix "-ly" (meaning in a manner). The word "microtonally" refers to the manner of using small intervals in music that are smaller than the conventional semitones.
Think of 'small' ('micro-') intervals in music that relate to 'tone' ('tonal') — that's how you remember that 'microtonally' means in a manner that uses small musical intervals.
No commonly confused words.