Emotional flow of Chinese pop songs follows local cycles and later build ups
Sectional Structure and Emotional Dynamics in Chinese Pop Songs: An Empirical Analysis of Valence-Arousal Trajectories across 100 Songs
Sound
Summary
This study looks at how emotions change throughout different parts of 100 Chinese pop songs. The researchers matched song sections like verses and choruses with measures of emotional energy and positivity. They found that verses tend to be calmer, choruses are more exciting, and other sections like bridges serve as transitions. Overall, songs often build up emotional intensity toward the end, but not always in the final chorus. This creates a pattern where small emotional cycles happen within the song’s parts, while the whole song gradually becomes more energetic.
What this means in practice
- •For music streaming services: Improve song recommendation by analyzing emotional patterns in song sections to match listener mood preferences dynamically.
- •For music producers and composers: Design song structures that effectively build emotional intensity based on common valence-arousal patterns found in successful pop songs.
Authors
Jingyi Lyu
Abstract
Music Emotion Recognition (MER) aims to identify and represent emotional information in music through computational methods and is an important research area within Music Information Retrieval (MIR). To address the limited consideration of song sectional structure in existing dynamic MER research, this study examines 100 Chinese pop songs by aligning 1,046 manually annotated sections with continuous Valence-Arousal (VA) trajectories and analyzing them from the perspectives of section type, adjacent section transitions, repeated sections, and whole-song trajectories. The results show that emotional differences across sections are reflected more strongly in Arousal. Verse typically forms a relatively low-activation baseline, Pre-chorus exhibits a progressive buildup, and Chorus produces a more pronounced high-arousal arrival, while Interlude, Bridge, and Outro tend to show transitional, divergent, and closing functions, respectively. Although whole-song sectional configurations are diverse, high-frequency local transitions are relatively concentrated. High-arousal positions occur more often in the later part of a song, but are not fixed to the final Chorus. Based on these findings, this study summarizes the emotional organization of the selected pop songs as an empirical framework of "local cycles-global accumulation", in which local sectional cycles are accompanied by emotional pullbacks, while the overall trajectory exhibits a later-stage rise in VA and a tendency for high-Arousal positions to occur later in the song.