Sam Tsui - Firework & Grenade Mashup (Explosion Medley)
----------------I love Youtube sensations, mostly because of the artistic license to call your mashup an "exposion medley." Rightfully titled, because Sam Tsui performs beautifully on piano and knocks out the radio hits with a voice that puts up a great fight with Bruno Mars.
Sam Tsui are two crooners on Youtube named Sam and Kurt. They're on iTunes, but their mashups and covers gain the most attention from over 500,000 + subscribers. Check their page out after hearing this song of the day: