I thought Planets was from the Rumours sessions? Hence it's inclusion on the reissue.
Cecilia could have been written anywhere from 1975 (when she wrote SOTM) to the Tusk era, but I'm not sure about the recording. Are there two versions? I had one once that was labeled as Bella Donna era and another that said 1978. I don't know if that's just someone (me) ****ing with file naming.

I just remember one was really long. I think it's only being labeled BN because it might have been on the Cathouse Blues compilation that someone put together.
Blue Lamp - 1980.