I'll give you a question, please answer with step-by-step reasoning process.
Everybody wants to be the frontman or play guitar in a what?\nOptions:\n- case\n- concert\n- rock band\n- toy store\n- music room

rock band
Rock band means a number of musicians who play rock music together.

Frontman means the lead singer of a pop or rock group.

Guitar is a stringed musical instrument.

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So, the answer is rock band