These recordings are intended for either advanced singers, or to support vocal study with a good teacher. If you are a beginner, I recommend that you get training with a teacher.
Just click the box on the upper left corner of any of the following playlists to find the index for the recordings. If you are still learning these exercises, use the recordings with the guide vocals.
If you are more experienced try vocalizing with only the chordal accompaniment. This will assist you in finding and maintaining good intonation, as well as learning to sing a melody on your own, instead of relying on following a guide melody.