AnimeMusicVideos.org

Interesting choice of music. it reminds me of the beginning of Mahler's 6th symphony

Performers: Santec Music Orchestra
Music Publisher: Radio Santec GmbH

The actual video "content" ends at 0:58. The rest is just repetitions of it.

this is pretty cute. gives me urge to watch the latest movie or series or whatever it is, of the show

The 'actual content' ends at around 1:17. It loops twice more, over the video length of 3:51.
(Inspired by those '1-hour, 10-hour long repeating anime videos' on youtube)

thanks folks for the compliments