This spell is unleashed by a sung incantation; it creates free action (akin to that of the 4th-level priest spell or the ring of free action) in a spherical area of effect centered on the caster. In this space (which moves with the caster), all creatures can move and attack normally, and the following magical effects are negated or prevented from forming: web, slow, entangle, hold, and all types of paralysis and petrification. Beings under any sort of compulsion (such as charms, or psionic influences) are freed from all of those states upon entering the brightsong's area of effect.