Not as Abstract as it should be ......

I quite like these challenges, my problem is time.

So this is my best effort, at a bit of a late hour.

It's not quite abstract, it is relevant to my day (which is part of the point of blip to me), and I've tried to incorporate a 90 degree angle as requested.

The BBC Proms book is something I look forward to each year, and this year's came out yesterday - I picked it up on my way out of Manchester. As the assistant told me as I picked it up from the counter at Waterstones - their product placement had worked. I'm looking forward to a bit of planning ahead.