A B C, It's As Easy As 1 2 3

Very much back to an emergency blip for today. I'd seen nothing also all day until I happened upon this alphabetically and numerically themed stencil (which I've added some backlighting and colour to) and the title came to me before I'd even clicked the shutter.
So of course I've had to tag the iconic video of what is reputed to be the first ever live TV performance of ABC by the Jackson 5 on American Bandstand on the 21st February 1970.

https://www.youtube.com/watch?v=ho7796-au8U