The Singing Fountain is one of the dominant features of Mariánské Lázně.
Here is a daily program of music played as the fountain springs into life - these performances take place every odd hour from 7 am until 10 pm with the final two displays (9 am & 10 pm), making use of embedded lights.
Each year on 30th April at 9 pm, the fountain puts on its first performance of the new tourist season. The official close of the season comes on 31st October at 8 pm when the fountain puts on its final show.
More information here.