Music-Instrument Predicate

The music-instrument predicate matches against all items which can be used as music instruments and takes no arguments. At the time of writing this, the aforementioned concept has just been introduced and only regards goat-horns.

Examples

Input: admire
Result: All items which play the sound called admire

Input: call
Result: All items which play the sound called call

Input: ponder
Result: All items which play the sound called ponder