From browing Devin Supertramp's work I noticed the crazy hyperactive violinist Lindsey Sterling who seems to have found a niche delivering some very awesome work collaborating with talented people from all over the youtubesphere
One of my preferred collaborations was her Skyrim cover with Peter Hollens, which then led me to find his cover of Gotye's famous single(my preferred version of the song), which then led me to find Kimbra.