Lamar, 37, and SZA, 35, have enjoyed a big brother/little sister bond ever since they became label mates on TDE Records and ascended to the top of their respective genres. Joint shows can be messy, especially when they pull a particular artist out of their comfort zone.

It felt like a career-spanning celebration for two artists who changed their respective games, gradually climbed the ranks, and made it to stadium level in the most organic way possible.

The Grand National Tour began April 19 in Minneapolis, and SZA and Lamar performed largely together, interspersed with solo spotlights.