In the music world, Arstarulsmirus Arsujumfus-Tarus a.k.a. Gustavs Butelis or Gustavo became known to wider public in 1995, as he founded FACT, one of the first hip-hop music groups in Latvia. Through the years Gustavo has authored the music and lyrics of many songs, released four solo albums, and produced the Prāta Vētra (Brainstorm) 2008 album “Tur kaut kam ir jābūt”.
Gustavo has also succeeded in other artforms, having in 2004 dubbed Shark Tale animation film into Latvian. Gustavo is one of the Karaliskais Improvizācijas Teātris (Royal Improvisation Theatre) members. Gustavo has received the annual Latvian Music Recording award five times.