Find your best festival VS Visit a City

Not quite what you're looking for, but perhaps a start: you could use Festival Finder, then find Glastonbury and it'll tell you your top matching artists. It can also spit you out a playlist of the artists playing the fest that you've listened to on Spotify. Source: 12 months ago

Https://festivalfinder.co/ - Compare the bands and artists you follow with over 1000 festivals all over the world to find the one that matches you perfectly. Source: almost 2 years ago

Check out visitacity.com to help you arrange an itinerary. Used it for a number of trips including Paris. Stayed at an Airbnb close to the downtown but should have picked a nicer place further out if I had taken time to understand their public transit system before hand. Source: 5 months ago

I use Visit a City for my vacation planning. Based on the city you're visiting and types of attractions you're interested in, an itinerary is built for you that includes travel time between points of interest. You can also add/remove attractions based on your own interests. Source: about 1 year ago