USC Trojan Marching Tunes: Silver Scrapes, Get Jinxed, Demacia Rising

Does anyone remember when Riot posted on SoundCloud tracks of the USC Trojan Marching Band playing Silver Scrapes, Get Jinxed, and Demacia Rising? I'm a junior in my high school's marching band, and I really want to play one of those songs at least once before i graduate. They must exist somewhere, but I need help. If anyone has a connection and can help me get the music it would be much appreciated.