The first part did not connect the music with the image for me and mainly due to what Alexander already pointed out, the internal clock is different. The music itself is working fine, but in combination with the video, check really what is going and get that feel. Second part worked better.
My tip would be, take your time to work on things. I totally don't see the relevance in doing it in one day. Unless you have a client screaming in the back of your head with a tight deadline, there is no need to rush things. And doing it quick now in one day, doesn't make you better in doing it quick in the future when working on tight deadlines. I think it is important to take your time to develop your skills.