A Mis Abuelos (“To My Grandparents”) is a virtuosic Afro‑Cuban jazz piece by Arturo Sandoval, often played on trumpet or flugelhorn. It blends son montuno phrasing with bebop harmony. Many transcriptions mark clave‑aligned passages, and “21” often refers to a high‑energy bridge or technical break.

The professional arrangements, such as those by Michael Philip Mossman , are praised for their sophisticated writing for the rhythm section, especially the piano and percussion.

A Mis Abuelos (Professional Editions-Jazz Ens) - Hal Leonard