By owl city

the instruments are piano computer keyboard drums
the type of music fireflies is synth pop
i like this song because i like fast beat songs like this
the person who directed the music video is steve hoover
the song fireflies became a big hit in Australia, Belgium, Finland, Sweden, Norway, United Kingdom, and United States
owl city is just one person named Adam Randal
owl city has four albums
the song topped the charts in 20 different countries