Original sentence: A few very old songs of European origin, such as "Old Hundred" (D,C 49), which the Denson edition of the Sacred Harp dates to 1551.The words of Sacred Harp music tend to be older than the music.Thus, "D,C 49" means "found on page 49 of both the Denson and Cooper editions".White himself is represented by 32 songs
Edited sentence: A few very old songs of European origin, such as "Old Hundred" (D49, C49), which the Denson edition of the Sacred Harp dates to 1551.The words of Sacred Harp music tend to be older.Thus, "D49, C49" means "found on page 49 of both the Denson and Cooper editions".White himself is represented by 32 songs, a number of which are seldom sung today