1 minute and 36 seconds. The musical roller coaster opened on May 31, 219, and is the latest roller coaster in beijing happy valley. With a total length of 1,196 meters, this roller coaster is the longest roller coaster in beijing happy valley. It is 48 meters high, the speed is 48.4 kilometers per hour, the total duration is 1 minute and 36 seconds, and there are 9 rows of people in each row.