How many instruments in a tango orchestra or band? What are they?
The number of instruments varied, depended on how the orchestra leader wanted to arrange his/her orchestra or band and the occasion of performance. The choice of instruments was not restricted as well, but normally we can find bandoneon, violin, double base or cello and piano in a tango orchestra. Other instruments like clarinet, drum, trumpet could also be included in the orchestra. Since late 1930s, it was common to include singers in the orchestra as well. Generally speaking, in a tango orchestra there were 3 to 5 bandoneons, 3 to 5 violins, 1 base and 1 piano, sometimes with singers and sometimes did not.