Adjust piece titles to contain the lyrics

Schubert_StabatMater_D383_01_Chor.ly

Schubert_StabatMater_D383_02_Arie.ly

Schubert_StabatMater_D383_03_Chor.ly

Schubert_StabatMater_D383_04_Duett.ly

Schubert_StabatMater_D383_05_Chor.ly

Schubert_StabatMater_D383_06_Arie.ly

Schubert_StabatMater_D383_07_Chor.ly

Schubert_StabatMater_D383_08_Arie.ly

Schubert_StabatMater_D383_09_Chor.ly

Schubert_StabatMater_D383_10_Terzett.ly

Schubert_StabatMater_D383_11_Terzett_Chor.ly

Schubert_StabatMater_D383_12_Chor.ly

Schubert_StabatMater_D383_Ch.ly