Harmonica

Nice sounds, but near always uses for blues. I think it can be used also in others genres.

Some information from Wikipedia:

The harmonica is a free reed wind instrument. It is played by blowing air into it or drawing air out by placing lips over individual holes (reed chambers) or multiple holes. The pressure caused by blowing or drawing air into the reed chambers causes a reed or multiple reeds to vibrate up and down creating sound. Each chamber has multiple, variable-tuned brass or bronze reeds, which are secured at one end and loose on the other end, with the loose end vibrating and creating sound.

Reeds are pre-tuned to individual tones, and each tone is determined according to the size of reed. Longer reeds make deep, low sounds and short reeds make higher-pitched sounds. On certain types of harmonica the pre-tuned reed can be changed (bending a note) to another note by redirecting air flow into the chamber. There are many types of harmonicas, including diatonic, chromatic, tremolo, orchestral, and bass versions.

The harmonica was developed in Europe in the early part of the 19th century. Free reed instruments like the sheng were fairly common throughout East Asia for centuries and were relatively well-known in Europe for some time. Around 1820, free reed designs began being created in Europe. While Christian Friedrich Ludwig Buschmann is often cited as the inventor of the harmonica in 1821, other inventors developed similar instruments at the same time. Mouth-blown free reed instruments appeared in the United States, South America, the United Kingdom and in Europe at roughly the same time.

How it looks:



Example of playing: