One major vuvuzela manufacturer even began selling its own earplugs to spectators. The BBC also investigated the possibility of offering broadcasts without vuvuzela noise. The vuvuzela has been the subject of controversy when used by spectators at football matches. Usage of vuvuzela in art music is limited. The Third Edition was published in August 2010, with some new words, including "vuvuzela". Many types of vuvuzela, made by several manufacturers, may produce various intensity and frequency outputs. This kicked off a short tour with Vuvuzela to promote the album.