RTC: “What a marvellous rest. I feel as though I’d slept for a week”.

Chroma is referring to a good night's sleep, all on account of Milo keeping an eye in the orchestra for him.

"What a marvelous rest," said Chroma, striding to the podium. "I feel as though I'd slept for a week. My, my, I see we're a little late this morning. I'll have to cut my lunch hour short by four minutes."