spiritual concerts may run anything from 90 minutes to two hours, and that is a decent estimate. A 15 to 20-minute break is also common. However, it's also true to claim that a concert may go considerably longer, anywhere from two and a half to three hours, as performers have such strong influence over their music.

The longest concert began when?

The world's longest concert, "Organ2/ASLSP (As Slow as Possible)" by John Cage, is expected to end in the year 2640, when who knows how the world will be. It began in 2001 and is expected to last for 639 years.