Manifest, Torinesi duets, no. 1

    tor_1_header.ly     - common header and paper variables
    tor_1_notes_vla1.ly - Viola 1
    tor_1_notes_vla2.ly - Viola 2
    tor_1_parts.ly      - tagged part definitions

    tor_1_score.ly      - full duet score
    tor_1_vla1.ly       - Viola 1 only
    tor_1_vla2.ly       - Viola 2 only