Merrilee - don't get confused between the copyrights of SONGS and the copyrights of ARRANGEMENTS and/or PERFORMANCES.however, legally speaking;(with all due disclaimers about I am not a lawyer etc....), t-in-oki is correct and the management of your faire is wrong, but that won't do you any good keeping the job....
and in some cases, the tunes are copyright, but the lyrics are not, or vice versa......