A Standard orchestra but with only one instrument of each instrument
The oboe plays a crucial role in tuning the orchestra by providing a reference pitch for the other musicians to tune their instruments to. Its distinct sound and stable pitch make it an ideal instrument for this purpose.
Instruments are objects that are used to make music. Every instrument makes a different sound.
I think you are referring to the mouthpiece which is on every brass instrument.
A piano is both a percussion instrument and a string instrument. Inside a piano, tiny hammers strike strings to make pitches. It is a string instrument in that the strings are what vibrate to make the sound, but it is a percussion instrument in that it has a keyboard and strikes to make sound.
Bassoon
An instrument with short strings will make a rubber band type sound but real high pitched.
The strings that are on the guitar make the sound play. If you think about it, almost every instrument something vibrates to make a sound. In a saxophone, when you blow into the mouthpiece, it makes the reed move. When you hit a violin, it causes the string to move.
If you press the hudhud instrument it'll make a low pitch sound but if you press it upward it will make a hudhud sound.
an instrument
Erhu is not suitable in the orchestra, because it only has 2 strings, and symphony compsitions for the violin are usually going beyond the 2 strings that the erhu has, which is middle D and A. The other reason may be, the materials used to make the erhu: the bow of the erhu is made of horsetail, and the soundbox of the instrument is made of snake skin. Therefore, it makes the 'voice' of the erhu sound melancholy, and occasionally it may sound like somebody crying. Thus, it is not suitable to be in an orchestra. But rather, a Chinese orchestra.
because the sound waves combine to make a bigger louder wave