???File-sharing may increase awareness of smaller, more obscure artists and their music by making the music available from more sources and at a much lower cost (or for free in the case of illegal file-sharing),??? they write. ???While file-sharing may offset some album sales for small artists[,] this may be mitigated in part by increased sales from the larger potential fan base that may result from increased awareness of those artists.??? The research was based on analysis of data from Pollstar, SoundScan and MusicBrainz.