This link will take you to download an archive of Beauchamp performances from 1974 to 1991 (the format of this and the later document is as below):
/uploads/2/3/8/2/23820368/beauchamp_music_pre_1992.xlsx

This link will take you to download an archive of Beauchamp performances from 1992:   
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​/uploads/2/3/8/2/23820368/copy_of_beauchamp_music_website.xls