Creator of the danzonete — Aniceto Díaz added a sung vocal section to the danzón in 1929, creating the danzonete and opening the door to the subsequent vocal innovations (danzón-mambo, chachachá) that followed.
Díaz was a musician from matanzas"> Matanzas who in 1929 composed Rompiendo la rutina — the first danzonete, a danzón with an added sung vocal section. This innovation broke with the danzón's purely instrumental tradition and introduced the voice as a structural element. The danzonete never became as popular as the danzón or its successors, but the principle it established — that the danzón structure could accommodate a vocal section — opened the way for subsequent innovations.
Aniceto Díaz's contribution is typically noted only in passing in music histories, but it represents an important transitional moment in Cuban popular music's evolution from the purely instrumental danzón toward the vocal-centered formats that would come to dominate.