The packet on the empty chair

An original narrative set at an invented rehearsal.

A brown packet lay on the empty chair beside the conductor. Each time someone entered, they glanced at it and then at the clock. It contained the replacement music for the afternoon rehearsal, but the person who knew how to divide it into parts had not arrived.

At last, a violinist opened the packet. There were six folders, each labelled with an instrument. She placed them on the corresponding stands and left the spare copies on the conductor's chair. We had been waiting for someone to perform a task whose instructions were already visible. When the late librarian arrived, the first page was on every stand and the tuning had begun.

Write down the colour of the packet and the number of folders inside it.