In the 1950s, he wrote numerous vehement letters to newspapers, radio, and television shows, stating that he was the true and sole inventor of jazz music, damaging his credibility and provoking a backlash against him and his reputation and career. Nick La Rocca claimed to have invented Jazz and often complained that African-American musicians have been given too much credit for the birth of Jazz. He was so obnoxious about this, that many people tend to try and overlook the important contributions he made to the music and the role that the Original Dixieland Jass Band played in popularizing Jazz around the world.