TheMusicReborn is a trumpet-playing fan who shared several fantastic covers and original songs with us. The embedded video is his cover of Smile Smile Smile, because who doesn't love that song? Then there's two originals: Rarity's Waltz and Uncertainty (Trixie's First Night).
Last but not least, TheMusicReborn did an analysis of Winter Wrap Up (and gives us a shoutout!). Thanks, TheMusicReborn!