His enumeration combines instruments that modern organology would classify as lyres (lyra, barbiton) and as harps (psalterium, pectis).
The book has seven sections (or 'strings to its lyre', as he coyly puts it).
First of all, fidicula and fides are regular terms for the lyre.
Although initially the lyre-ic speaker marks his ownership of such deeper and richer music, "strain" and "refrain" are repeated in the rentrement without the possessive pronoun.
I regret that it is not at present possible to extend the classes of persons who may obtain such lyres.
In so far as songs may inspirit us, they will not be from his lyre.
They played the lyre, but they never played the harp.
Above the escutcheon is decorative mantling and a lyre as the crest.