Rather to my surprise, I find that I have never chosen this track as a Sunday music video.
It comes from a concert filmed for Finnish television early in 1967, when Steve Winwood was 18. He soon left the Spencer Davis Group to form Traffic, having tired of what was essentially copying Black American records.
But while he was with Spencer Davis, no British musician was better at this copying, as a singer, keyboard player or guitarist, than Winwood.
As to why I was surprised... Five tracks from that Finnish concert have been featured here before: