No you cannot it is impossible to produce two different sounds from your mouth at the same time.
Planes make the same sounds whether in the day time or night time.
Since it is an electronic instrument, it becomes an investment over time, you can use to produce many different sounds with the same device, and it takes less space than having several instruments in the same room.
you can put a pice of cake in your mouth then put a pice of pie in your mouth then /
You can't.
they produce a Siamese twins
No. All modern synthesizers have MIDI, but most can produce many different sounds at the same time without any other MIDI device connected.
yes, but it is very hard
yes and no at the same time
No, your breathing in and out is controlled by your diaphragm which does not move in two directions at the same time.
The sound that is produced by an Opera Singer is a pleasant open, warm sounding voice. Some singer have the ability to produce a very relaxing sound to the ears. This requires years of training. Opera singers have powerful sounds and at the same time, soft and Serene sounds if trained properly.
say chippewa sucking in air through your mouth at the same time.
i look for the companies which produce wtach hand with lighter in same time