Los timbales are drums, so your answer would be "drum set"
El, la, los, and las are all definite articles, and un, una, unos, unas are all indefinite articles.
Definite articles such as “the” in English refer to a specific noun or one already known by the reader. Indefinite articles such as “a” in English are used with nouns that are general or when their identity is not known.
Ok for this you have to describe them and just write it in English and use google translate
