I like the cumbia rhythm (dance beat) a lot. The bassline is smooth along with the beat as well. I like it, but maybe work on the short staccato type bassline notes to phase in and out a little bit (for extra flare). You can move the frequency of them from low to high and high to low if you link the frequency knob to a controller. I don't know how you produce (digitally or with analog synths), but you can alter the frequency. The piano is mixed nicely as well and has a cool melody.

I like the cumbia beat a lot, its a fun danceable tune. I have a song with a cumbia style dance beat too..
...but can you check out this? thanks
https://soundcloud.com/epsilonbeats/its-all-up-to-fate