Deacon Resources
Deacon Resources for Singing the Mass
The 2007 USCCB document Sing to the Lord: Music in Divine Worship says the following about deacons:
22. After the priest, the deacon is first among the liturgical ministers, and he should provide an example by actively participating in the song of the gathered assembly. (See GIRM, no. 147)
23. In accord with their abilities, deacons should be prepared to sing those parts of the Liturgy that belong to them. Deacons should receive training in singing the dialogues between deacon and people, such as those at the Gospel and at the dismissal. They should also learn to sing various invitations in the rites, the Exsultet, the third form of the Act of Penitence, and the Prayer of the Faithful. If they are capable, deacons should be trained in the practice of chanting the Gospel on more solemn occasions. Programs of diaconal preparation should include major and compulsory courses in the chant and song of the Liturgy.
Order of Mass (PDF Booklet)
Penitential Act
Kyrie
Gospel
Sign of Peace
Solemn Blessing
I did not find a practice video containing the music, but it should be fairly easy to follow in the booklet: "Bow down for the blessing."
Dismissal
Other Chants for Deacons
Prayers of the Faithful
Gospel Tone
PDF Score, Example Audio (Pentecost)
I have a copy of a book with all the Sunday gospels already notated (square notes). Deacons at our parish are welcome to borrow it if they wish to chant a gospel. NB: The chanting of the entire gospel takes practice and must be done well. It is best to begin with one that is fairly short. Also, since it is currently not a normal practice, it would be best to begin with one for a greater feast to accent the heightened solemnity.
Here is a website that explains how to chant any gospel.
Gospel Tone Solemn
PDF Score, Example Audio (Pentecost)
The Nativity of Our Lord Jesus Christ (Christmas Proclamation)
The Announcement of Easter and the Moveable Feasts (Epiphany)
Solemn Intercessions (Good Friday)
The Showing of the Cross (Good Friday)
PDF Score, Mp3 Audio1, Mp3 Audio2
(Sung by the priest accompanied by the deacon if needed.)
The Light of Christ (Easter Vigil Procession)
Exsultet (Easter Vigil Proclamation)