Phusaphusana
Phusaphusaana is an entry-level enchantment, with a range of sixty feet, an instant casting time, and a duration of about a minute. This spell from the bronze age prevents the target from hearing anything but your voice. The spell’s effects are two-fold. First, it silences all other sounds, and second, it allows the caster's voice to be audible despite any barriers present. This spell only works on living things and not on any form of sound gathering technology.
Phusaphusaana is useful when having conversations at concerts or near heavy equipment.
One of the more unique uses of the spell occurred on July 16, 2013. Italian astronaut Luca Parmitano was conducting a routine spacewalk to repair cables on the exterior of the International Space Station when water from his drink pouch began leaking into his helmet. The water clinging to his face and mouth left him unable to speak correctly. Not realizing the specific problem and assuming an error with his communications, astronauts on the station, cast phusaphusanna so he could hear them. He signaled that he needed assistance, and the spacewalk then aborted safely.
Here on Earth, the spell has been helpful communicating with and soothing those with autism.