Instruh are a type of species that changes in appearance based on the type of instrument they latch on to as infants. Nobody really knows what an Instruh originally looked like, but there are a lot of rumors based on the topic.
Most are claimed to be false.
If The Instruh change their body based on the instrument they cherish, how can one know if the person they are interacting with is an Instruh? The quick answer is to study how that person moves. Sure-Fire Signs of dealing with an Instruh include, but are not limited to...
Meeting a humble Musician who has a seemingly infinite amount of arms to play various instruments.
Instruh have a knack for collecting tunes over the years, and it is often speculated that the more instruments and limbs an Instruh displays, the more mature they are.
There are plenty of famous Instruh, the most prominent one of our time is The Composer, an elder Instruh who some say actually looks like his original self.
He has thousands upon thousands of limbs which he summons at will, and they can stretch out for what seems like miles. It is speculated that The Composer is one of the first Instruh in existence due to the amount of instruments and limbs he has.