Acordeonizando... Para Acordeón Diatónico de Teclas (Siguiendo la pantomima).

While I cannot definitively find out anything about this composer, I did learn that the work was composed in 2012.

This is a piece for accordion, which is what the Emil harmonium sounds like to me. I think the work transfers really well. It gives off "romantic pizzeria in Naples" vibes. Also, it's short, fun, and accessible.

Here's the ISMLP link to the score:

https://imslp.org/wiki/Acordeonizando_(Pérez,_Sergio_Aarón)