Three GO Transit EMD F59PH 523, 547, 553 at Toronto's North Bathurst Yard.
It's Old Love/New Love, GO 523 rolls around the curve as union station just down the track. As there is MP40PH-3C in the back round approces the union station rail corridor.
GO 166 heading back to Toronto Union with a reverse direction schedule run from Milton on CPR's Galt Subdivision.