Hymns can move from a printed page to a choir arrangement, a local-language translation or a contemporary recording while retaining a recognisable message.
The edition matters
The same hymn may appear under different numbering, wording and translation choices. A useful record identifies the book, edition, language and publisher where possible.
A new recording has its own credits
Even when the historical text is in the public domain, a recent arrangement and recording may still be protected. Writers, arrangers, musicians and producers should be credited.
Local use is part of the history
Tempo, response patterns and language can change the way a hymn lives in Nigerian worship. Those practices deserve documentation alongside the original text.
The NzehTunes archive separates hymn history from the rights attached to a particular recording.