At a depth of more than 6,000 feet below sea level, the Shaft Bottom Boys played music for almost an hour. The event took place at the Creighton Mine, which is in Sudbury, Ontario, a city with a long history of mining. A concert can last anywhere from 90 minutes to two hours. This range of times is a good estimate of how long it will last.
A fifteen- to twenty-minute break is taken every fifteen to twenty minutes.
On the other hand, it's true that artists have a lot of control over the music they make, so a performance could last much longer than two and a half to three hours. This is because musicians have the ability to take their time crafting their songs. As mentioned by spiritual concerts, John Cage's performance "Organ2/ASLSP (As Slow as Possible)" is currently the world's longest concert. It is expected to end in the year 2640, but it is hard to say what will be going on on earth at that time. It all started in 2001, and experts say it will keep going for another 639 years.