Christopher Bill

Bill performs a variety of music styles, from classical and jazz to pop and rock. Aside from original work, his discography contains covers of songs by other musicians and various soundtracks and his cover version of Pharrell Williams' "Happy" went viral in 2014. As of September 2015, his ClassicalTrombone YouTube channel exceeded 100,000 subscribers and over 10 million total views.

Bill independently released two multitracked albums. In spring of 2014, Breakthrough, an album of pop and rock covers. In winter of 2014, Smiling's My Favorite, an album of Christmas songs.

While he was studying at the SUNY Purchase Conservatory of Music, Bill began arranging popular songs for trombone quartets. He would record himself playing all four parts, and then upload them to YouTube. The first song to gain popularity was Owl City's "Fireflies", which he uploaded in August 2012. In December 2012 he posted a new Christmas arrangement every day leading up until Christmas, calling it "The 25 Days of Christmas. Starting in July 2013, he began to post a new video every Saturday, and in February 2014 his video of Pharrell Williams' Happy went viral. As of December 2015 the video has over 2.8 million views.

Christopher Bill (born June 9, 1992) is an American trombonist, composer, arranger, and YouTuber. He presents classically arranged popular songs multitracked on trombone, both live and in music videos found on his YouTube channel, ClassicalTrombone, which he introduced in 2011.