Tsyolin

Tsyolin, also known as AJ The Engineer from his handles on YouTube and Soundcloud, is an American brony musician. He specializes in (synth-)orchestral remixes, which are frequently titled "Tsyolin Befriends ". In April 2012, he was a guest host on Everfree Radio, interviewing fellow musician d.notive.

Friendship Symphony No. 1 in D Major
Tsyolin's second-most popular work and also his longest (by far, as of April 30, 2012), this is a medley of orchestral remixes of all major Daniel Ingram songs for the show's first season, with the exception of the Cutie Mark Crusaders Song. In order:
 * 00:00: Prelude
 * 00:20: Theme song
 * 01:49: Giggle at the Ghostie
 * 04:30: Winter Wrap Up
 * 08:17: Cupcake Song
 * 09:29: Art of the Dress
 * 12:36: Hush Now Quiet Now
 * 14:16: So Many Wonders
 * 15:14: At the Gala
 * 19:21: Prelude reprise

WoodenOverture
The most-viewed Tsyolin video on YouTube (at over 58,000 views as of April 30, 2012), this is a medley of symphonic arrangements for songs by Glaze/WoodenToaster. Start times in the Medley and links to the originals are as follows:
 * 0:00: Nightmare Night
 * 1:12: Rainbow Factory
 * 4:04: Beyond Her Garden
 * 6:07: Pinkie's Lie
 * 8:09: Nightmare Night reprise