Unidentifieds on 88.1 MHz

Heard on the car radio today on 88.1 MHz while I was in Whitby, Ontario: a couple of stations battling for the frequency. Neither sounded like any of the semi-regular ones that come in on this frequency. Perhaps there was some tropo or e-skip in action. No IDs heard. First was a CBC Radio outlet with a program of acoustic music. English, but not parallel to either of the local CBC stations. This was mixing with a station playing country music. Both disappeared before any identifying material was heard. 1820-1831 UTC.