Ever since I've gotten my Angel Lyre, I haven't gotten the EXP reduction to work on Hymnus. Here's my emergency Hymnus macro:
/ja "Pianissimo" <me>
/equip Range "Angel Lyre"
/equip Ear1 "Minstrel's Earring"
/equip Ring2 "Minstrel's Ring"
/wait 1
/ma "Goddess's Hymnus" <me>
The Pianissimo is for when I'm around a bunch of other people, and I'm the only one dying. I don't want to erase their songs. In case I do want to hit everyone, I have another macro next to it without the Pianissimo.
In any case, I've used this macro a few times, and every time I've reraised, I've eaten the full R1 penalty. With this setup, I have the Lyre equipped before singing the song and at its completion. And when I've died, I had the Lyre on when I Reraised. I really don't know what the problem could be other than Pianissimo negates the effects of instruments.