Harmony  

Godzuki is correct, the spell still functions.

You just need to make sure you are using it on the right level creatures.

When looking at spell descriptions for 'Reaction Raduis (##/##)' and 'Frenzy Radius (##/##)' the first number tells you what the redius is reduced to (in whatever distance units SoE uses).
The second number tells you the max level MoB the effect will work on.

So a (15/40) would mean that the radius is reduced to 15 units, and the max level of the MoB allowed is 40. You will find similar number schemes with other classes' Lull-style spells.