sources - Nottingham eTheses - The University of Nottingham

The lyra is a lyre-shaped portable glockenspiel of the sort used in military
bands, usually designated by the term ‘campanelli’ in Italianate nomenclature.
In UE 1996, zvonky [literally ‘little bells’] is taken to designate an unpitched
bell. However, the notation (admittedly often erratic) and context in ŠFS suggest that,
whilst the onstage use of the instrument (in the recruits’ scene, Act 1 Scene 4) should
indeed be some sort of unpitched handbell, elsewhere (e.g. in Act 1 Scene 5, fig. 59 ff,
and Act 3 Scene 6, fig. 41) a pitched bell is probably intended. Accordingly, the
present edition uses a single-line stave for the unpitched passages, and a conventional
five-line treble staff for the pitched ones. The original notation in ŠFS is given where
necessary in footnotes.
Triangle
Judging from ŠFS, Janáček may have regarded the triangle at certain points in the
score as pitched. However, its notation is riddled with inconsistencies, and in the
present reconstruction the modern unpitched convention is adopted throughout.
Harp
Because of the peculiarities of the instrument and for the sake of clarity, the harp part
has often been renotated here either enharmonically or with replacement key signature
(e.g. I/i/145 and Act 1, fig.16; Act 2, figs. 15 and 117; Act 3, fig. 1a).
‘Ad libitum’ parts: contrabassoon and trumpet 3
In addition to the relatively infrequently used fourth horn and tuba, the 1904 version
of Jenůfa also contains two instruments that did not survive the 1907 revisions: a
contrabassoon and a third trumpet, both of which play only in the closing pages of
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