Is the word concerto the same in Brazilian and European Portuguese?

Yes

The word "concerto" has the exact same meaning and spelling in both Brazilian and Continental Portuguese: it refers to a musical performance or a musical composition (like a violin concerto). There is no difference in its grammatical function or core definition.

The only differences are in pronunciation. In Brazil, the unstressed vowels tend to be more open, and the "r" sounds may vary by region. In Portugal, vowels are often more closed or reduced, and the cadence of the word follows the more stress-timed rhythm of European Portuguese.

It is also important to note that in both dialects, "concerto" (music) is a different word from "conserto" (repair/fix), which is a common point of confusion for learners.

Brazilian Portuguese Examples

1. Eu fui a um concerto de rock ontem à noite. (I went to a rock concert last night.)
2. O concerto de piano começou com atraso. (The piano concert started late.)
3. Ela adora assistir a concertos de música clássica. (She loves watching classical music concerts.)
4. O concerto da banda será no estádio. (The band's concert will be at the stadium.)
5. Já comprou os ingressos para o concerto de amanhã? (Have you already bought the tickets for tomorrow's concert?)

Continental Portuguese Examples

1. Fui a um concerto de rock ontem à noite. (I went to a rock concert last night.)
2. O concerto de piano começou com atraso. (The piano concert started late.)
3. Ela adora ir a concertos de música clássica. (She loves going to classical music concerts.)
4. O concerto da banda será no recinto. (The band's concert will be at the venue.)
5. Já compraste os bilhetes para o concerto de amanhã? (Have you already bought the tickets for tomorrow's concert?)