I like both of these songs (technically three) but the first one especially interesting because you can see how they make these cool animations.

[DiGiTAL WiNG] drop the wave

Vocal: Hanatan | Album: DiGiWi PARTY | Original track: Touhou 10 – Fall of Fall ~ Autumnal Waterfall

[DiGiTAL WiNG] Land of Snow & Little Traveler

Vocal: Hanatan | Album: Frozen Traveler | Lyrics: Touhou Wiki | Original track: Touhou 13 – Desire Drive

Other contents soon^(TM).