The unexpected interaction occurred on social media, shortly after the death of frontman Steve Harwell was announced.
Steve Harwell, Smash Mouth's lead singer and founder, has died. He was 56.
Fans will remember Harwell from Smash Mouth's mega-famous 1999 hit "All Star."
The moment went viral online and 'The Late Show' even spoofed the incident.
The 50-year-old rocker reportedly had trouble breathing during sound check.