When Kallio Church was completed in the autumn of 1912, seven bells and a bell tower were simultaneously built in the massive tower. In 1909, the building committee had asked composers Jean Sibelius, Oskar Merikanno and the church's first organist Ilmari Krohn to be experts on the bells.

The bells weights over 1500kg together.

You can listen to the sound of the church bells by clicking on the audio below the picture.