Music Visualization Videos

Hello, as a new user i can’t upload a file, so i give a link

This is one of a series of music visualization videos that i’ve made.
You may see more on this playlist

First of all i would be grateful if someone with experience take a little time to watch some of them.
Except from criticism, i would like guidance and to ask if you think that this kind of work can go a step further than a hobby for me. Also if you think that something like this is a waste of time being created in blender. Thank you!

All was made in a 8 - 10 years old pc (i5 and 650gtx), which was a limitation in quality along with the number of frames needed for the animation (30fps 1920x1080)