These files lay out only mechanics of pitch and rhythm. The nuances and phrasing that make music beautiful are absent. Your part is in the foreground. Always follow the score, practicing in stages:
1. At first, forget words. listen 90%, and hum or la-di-da 10% volume.
2. When the notes and rhythms are comfortable, start singing the words and increase your volume to 50%.
3. Sing at 100% volume only when you are completely confident.
Filenames give the track #, part, movement #, page # and measure #.