A-Wn-ms-Mus.Hs.15497: Composer name in ms = 'Petrus de [la] Rue' ('la' written in musical notation) / Title as in ms = 'Missa supra Tous les Regretz' / Kyrie I: [Superius] and 'Tenor': 'Tous les regretz' (in red ink) / Pleni: 'Tenor': 'Non sunt loquele neque sermones quorum non etc.' / Benedictus: [Superius] and 'Contr[atenor]: 'Duo'; 'Tenor': 'Benedictus tacet'; 'Bassus': 'B[e]n[e]dictus tacet' / [Superius] and 'Contr[atenor]': 'In nomine tacet'; 'Tenor' and 'Bassus': 'Duo'
D-Ju-ms-12: Kyrie I: 'Tenor': 'Tous les regretz' / Benedictus: 'Osanna supra Kyrie ultimu[m]'
