**ASAP**Which detail in the text best refines the idea that the theremin is challenging to play? The Theremin
The theremin is one of the earliest electronic musical instruments and is played without any form of physical contact between the musician and the instrument.
The Russian physicist Leon Theremin invented this instrument in 1920, and he exhibited his innovation all over the world. The instrument has an unusual
appearance and consists of two metal antennas. The upright antenna controls the pitch, and the loop antenna controls the volume. The musician moves his
hands over the antennas to create electrical signals,, which are magnified through the instrument and relayed to the loudspeaker. The theremin sounds
ethereal and transports the listener to another world.
The instrument became very popular in the 1930s, but it soon faded into obscurity due to a lack of interest. However, it was revived in the 1990s, and since
then, it has been featured in the soundtracks of many movies. Many composers have created musical symphonies that showcase the unique notes of the
theremin. It is one of the most difficult instruments to master because even a proficient player requires a lot of practice to control the intonation of the musical
notes. Today, many enthusiasts also build theremins as a hobby using building kits available online.