The word "most atonal" refers to music that lacks a tonal center or key. Antonyms for "most atonal" include "melodic," "harmonic," "tonal," "musical," "structured," and "emotional." A melody is a sequence of notes with a discernible rhythm and tonality, while harmony refers to the simultaneous sounding of notes to produce a chord. Tonal relates to the major and minor keys in music and is a characteristic of music that has a recognizable tonal center. Musical is a general term denoting any kind of pleasing sound, while structured refers to music that has a predictable form, such as a symphony or pop song. Emotional encompasses music that evokes feelings in the listener, such as joy, sadness, or excitement.