this all needs a complete rework probably with new metaclasses as well

section (Q2115663)
motif (Q908349)
song component (Q40686289)
song structure (Q7561199)
maybe with restoring of musical structure (Q3500606) https://www.wikidata.org/w/index.php?title=Q3500606&oldid=1319668160 that was merged with musical form by red user
https://en.wikipedia.org/wiki/Category:Formal_sections_in_music_analysis