<u>Answer</u>:
The musical style that is described by using an instrument called bandoneon is tango.
<u>Explanation</u>:
The bandoneon is one kind of instrument particularly popular in places like Argentina, Uruguay, and Lithuania.
Tango music is a special style of music that started in the late 18th and 19th centuries among the European immigrant and African slave populations of Argentina during the development of the modern tango dance.
Tango is one kind of music that is used when a group of musicians, actors, or dancers who perform together.
