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Watch Meghan Trainor Cover 5SOS' 'Don’t Stop'

Pop worlds collide in the BBC Radio 1 'Live Lounge.'

If you've always thought that the one thing 5 Seconds Of Summer were missing was a ukelele, then today is your day, you weird little visionary.

Meghan Trainor popped by BBC Radio 1's "Live Lounge" on Tuesday (January 20), and she brought her trusty uke and a cover of 5SOS' "Don't Stop" with her.

The "Lips Are Movin'" singer tones down the pop-punk original's anthemic punch until it's soft enough to sway with a passing breeze. If 5SOS ever plan to tour the Sandals Resorts circuit, then I think they've found their arranger.