Otto's Warding Tones (Enchantment/Charm)

Level: 4
Range: 120 yds
Duration:  1 round/level
Components: V, S, M
Casting Time: 4 segments
Saving Throw: None
Area of Effect: 50' by 50' square

All creatures affected by this
spell will have their ears filled with loud tones only they
can hear. The notes will drown out all other sounds, effectively
making the creatures deaf, but also rendering the
creatures immune to all sonic attacks, such as sirens’ song,
a banshee’s wail, drums of panic, drums of deafening, or
the first use of a horn of blasting.

MC: 2 lumps of bee’s wax and a string from any orchestral
string instrument.