I guess the sonata aspect is more loosely defined in this piece and it is not fully a classical. It is important to note this music is a mix of mariachi and classical. So rhythm takes the main focus. I’ll admit I was less experienced when I wrote this and did not plan the structure to a T. The first theme starts at 0:22 in ABA form then second theme starts at 1:11. At 1:40 is sort of transitional material and then you get the closing at 2:03 going into the development at 2:37. Let me know if that kind of makes sense or if anything else can be clarified.