It's easier making a smaller film like El Mariachi. There are no budget worries because there is no budget. There is no crew problem because there is no crew. And if you screw up, no one is around to see you screw up -- so it's no longer a screw up.
I really liked the Mariachi singing in Westerns.
Many people in the neighborhood liked hip-hop and house music, and I couldn't play that. You can't perform that on guitar or drums, which was what I was playing, at the time. But, I got so much from mariachi bands that were constantly playing in the neighborhood.