Original Composition - Ultra

[aeon135]

This is Ultra 2 and 4, I'm looking for serious critique, tips and suggestions, many thanks.

I'm sorry, I can't seem to get the attachment MP3 thingy working, so I'm going to link you to the files on Soundcloud

Ultra 2 https://soundcloud.com/arthur-dents-dog/ultraviolet-1-1
Ultra 4 https://soundcloud.com/arthur-dents-dog/ultra-4

And if you're still with me
https://soundcloud.com/arthur-dents-dog/matthews-mania-no-5
https://soundcloud.com/arthur-dents-dog/cumulonimbus-impromptu