Score: 06-byrd--tristitia_et_anxietas-prima_pars---0-score.pdf
MIDI files:
| Num | Name | Cleffing; |
| 1 | superius | part in treble clef |
| 2 | medius | part in alto clef |
| 2 | medius | part in octavated treble clef |
| 3 | contratenor | part in alto clef |
| 3 | contratenor | part in octavated treble clef |
| 4 | tenor | part in alto clef |
| 4 | tenor | part in bass clef |
| 5 | bassus | part in bass clef |
CPDL link: https://www.cpdl.org/wiki/index.php/Tristitia_et_anxietas_-_Sed_tu_Domine_(William_Byrd)
IMSLP link: https://imslp.org/wiki/Tristitia_et_anxietas_(Byrd,_William)