[2] Samfree first came into prominence releasing various Vocaloid-based music online; his song Luka Luka Night Fever, released on Nico Nico Douga in February 2009, quickly became popular on the website and remains one of his most notable works today.
Having written both the music composition and lyrics for the song, samfree utilised the voice of Megurine Luka using the Vocaloid software to create the vocals.
[3] The song would later on form part of samfree's "Night Series" of Vocaloid music tracks.
Following a series of agreements with various studios, samfree composed and arranged character songs, opening and closing theme songs for anime series such as Wish Upon the Pleiades, Mushibugyo, Good Luck Girl!, Tegami Bachi: Reverse and Katanagatari.
[6][7] In addition, his music tracks have been featured in video games such as the Hatsune Miku: Project DIVA series.