IPA: /nɒnˈmjuːzɪkən/
KK: /nɑnˈmjuːzɪkən/
A person who does not play a musical instrument or sing professionally.
Even though she loves music, she considers herself a nonmusician.
Nonmusician → It is formed from "non-" (meaning not) and "musician" (from Latin "musica", meaning music). The word "nonmusician" refers to someone who is not a musician or does not engage in music.
Think of 'non-' meaning 'not' and 'musician' relating to music — so a nonmusician is someone who does not participate in music.