What type of music is La Bamba?

"La Bamba" is a traditional Mexican folk song, specifically a son jarocho. It's a lively and energetic song with a distinctive rhythm and instrumentation. While the original song is a folk piece, Ritchie Valens' 1958 rock and roll version is the most popular and well-known rendition.

So, depending on which version you're referring to:

* Original: Mexican folk music, specifically son jarocho