When to use personal a

Question

So I'm learning when to use personal a and was wondering if I did these sentences right

Alejandro canta una canción folklórica. Yo escucho a Alejandro Ines llama una companera de clase

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Answer 1

Ines llama a una companera de clase. We use a here not to indicate personal but to distingish between calling someone something and calling someone to get their attention. The other sentences are OK.