References
The general reference format for chants is "b-p-n" where b is the book number, "p"is the page number and "n" the chant number (in the book). The chant number may have a prefix and/or a suffix, depending on the particular chant book. If the chant number is followed by the diamond symbol (♦) the editor of the chant book claims explicitly that this is the first publication of the chant.

Hover the cursor over a book number for the full title of the book, click for additional information and a table of contents for that specific chant book. Click on the chant number to play the midi (if your browser supports it).

In addition to the general reference format, all chants in the database are numbered when they are entered. This unique reference number is also used as the filename for the midi files. The reference number is displayed in the popup information (visible in the lower lefthand corner of the screen) when the cursor is hovered over the chant number n in the b-p-n notation. The reference number can be of use to recall a particular chant (or to order a print version of the chant, refer to the home page). For this purpose a search function based on these reference numbers is provided. The search result points to the fingerprint pages where the reference number is listed with each chant.

Composers
Click on a composer name (in any listing) to go to the detail page for that composer. On this overview page all chants (melodies i.e. the top-most voice) by this composer are listed as full fingerprints, including the number of references to that chant. This form of representation allows to easily spot melodic variations of a particular chant. Click on a full fingerprint to go to the overview of all references for this chant by this composer. (Note: this new lay-out does not yet apply to the listings of "original" composers. This will be changed in the near future.
If the composer is actually the arranger of a chant or theme by another composer, the name of the original composer is added in square brackets.
If in a chant book the attribution of a chant is to the wrong composer, the incorrect composer name will be displayed in curly brackets in the table of contents listing of that chant book. In all other listings only the attribution that is considered to be correct is shown.

Chant types
The column "T" or "Type" indicates the type of chant (S=Single, etc - refer to the page Types)

Psalms
For those chant books where the chants are paired with the psalm(s) for the day, these psalms are listed in the table of contents, without mention of the day if the pairing is according to the BCP schedule. In certain chant books more than one set of chants is provided for sections of a psalm or for groups of psalm(s) for the day. In such cases the psalm or list of psalms in the table of contents is followed by the set identification (letter or Roman numeral) in square brackets.

When a chant is to be used for a proper psalm, the psalm number will be colored red and hovering the cursor over the number will display the particular sunday/feast. In the listings of the psalms the reference to that chant is also colored red and hovering displays the sunday/feast. The Venite chants get special treatment since the Venite does not have a fixed day like the psalms. Therefor, whenever a chant is used for the Venite and one or more days are specified this is treated in the same way as the proper psalms. In certain books this may lead to several "Venite" references on one line, but they will be for different days.

Changeable chants
Chants that are explicitly labeled "Changeable" (or marked "or in the minor/major mode") in a chant book are identified by the addition (Ch) to the key. If the chant number is the same for both the Major and Minor setting, a suffix M (for Major) or m (for Minor) is added to the chant number. If the chant in the parallel key was not printed in the chant book, it is nevertheless included in the index for completeness of the fingerprints. These additional chants are marked with an asterisk added to the m/M suffix (e.g. M*)

Fingerprints
The fingerprint of a chant consists of the first five intervals of the melody (i.e. treble part or the highest sounding note).
Click on an entry in the fingerprint column to go to an overview page for that fingerprint. This will display a list of all "melodies" that start with that fingerprint. The list includes the composer name and the number of references for that melody. Since the chants may have different keys, the list does not differentiate between keys, but major and minor keys are separately listed.
In some listings the fingerprint is followed by two numbers in parentheses these numbers are essentially a summary of the overview page. They have the following meaning:
- the first number is the number of books in which this fingerprint by this composer was published
- the second number indicates how many other composers composed a chant starting with the same fingerprint
Two examples:
- (5, -) means that this fingerprint was published in five books, but no other composer wrote a chant with this fingerprint.
- (42, 3) means that this fingerprint by this composer was published in fourty-two books and three other composers composed a chant with the same fingerprint.
If no numbers follow the fingerprint it means that this fingerprint was published in only one book and there is no other composer for the same fingerprint (this would result in the combination (1, -) which is not printed.)