Second attempt

In December, the brothers sang the anthem live again, on a radio station, promoting a Christmas album. This time the sound behaved from start to finish. That day, the registered letter in the agent's folder was left behind in the auditorium. Not every row and column has to be occupied.

Suspects

• Anabela, the breakfast presenter: She introduced the performance in the voice of someone holding back a laugh. She wasn't, she insists.
• Bonifácio, the station's sound engineer: He tested the sound five times before the anthem. He says nobody was going to blame him.
• Clarisse, the listener who won the competition: She won two tickets to see the performance in the auditorium. She brought her mum, who cried at the chorus.
• Damião, the record librarian: He files the station's records alphabetically. The Christmas album ended up between fado and anthems.