I have had success integrating the melismatic Gregorian Alleluias with jubilus thus far. (We sing the verse to a psalm tone as the choir is not yet skilled enough to tackle the melismatic verses) The Tracts are definitely out of our ability level, even with psalm-tone verses and, moving into Lent, I'm wondering what options are available that preserve that ideal but are appropriate for Lenten use. Not interested in the kitschy settings of the "Lenten GA".
In Latin? have you looked at the Graduale Simplex? This gives an Antiphona acclamationis as an alternative to the Tract (preceding it in the book). And authentic melodies with a good number of notes, though no melismata.
To participate in the discussions on Catholic church music, sign in or register as a forum member, The forum is a project of the Church Music Association of America.