Parov Stelar - He basically invented a new genre of music (Electric Swing) that I love. I wish more artists produced it.
Hardwell - I get that it's mostly preprogrammed stuff, but seeing Hardwell at Tomorrowland is an absolute EDM bucket list trip.
Shawn Mendes - Hear me out on this. In 2014, my daughter asked me to take her to the parking lot of Universal Music Canada in the middle of the day to see some 16 year kid perform all 4 of his songs. I had no idea who he was. There were less than 200 attendees and by the time he'd finished playing his only 4 songs I was convinced he was going to be a big star. I know his stuff is targeted to my daughter and her peers but he is a really talented kid that genuinely loves performing and puts on a good show for his fans. My daughter and I have travelled to several cities in the North America to see him perform. Great guy. I like rooting for good people.
Muse - dark and dystopian, a mish mash of musical styles and influences. I played their song Isolated Systems about a gazillion times when World War Z was released. I still get chills listening to it.