1. I enjoy the contrast of the first and second sections of this piece! It sounded like something from an early 2000s flash game, weirdly nostalgic in some way.
2. I like the drums in the beginning to add tension! Quick tip-- be sure to quantize things that you input via keyboard. The immersion of the string lines was slightly lost because not every not was exactly on beat. I'm not sure exactly how to do it in garageband/logic, but there should be resources online.
3. Loving the upbeat vibe of this last track, especially the gripping octave synthesizer line. Lots of instruments trade off melodic fragments, which makes for a lovely texture.
In all, I enjoyed these three pieces-- nice work, and keep writing!