T10MO is a famous YouTuber among the mashup comunities and makes megamixes and mashups. He is awesome! The link to his channel is here: https://www.youtube.com/user/Top10MusicOfficial
He has 30 million combined views in all. He is most known for his HITS OF 2015 Mashup, Locked Away Megamix, Love Yourself Megamix, Faded Megamix, and SUMMER HITS 2016.