In the mid-18th century, Mannheim became a great center of music in Germany. Due to the magnificent musicians and lively musical atmosphere of that town, several musical innovations took place there and were named after it.:Mannheim roll (steamroller):scale passages in measured tremolo, combined with a crescendo.Mannheim crescendo:Great crescendos and diminuendos that ranged from pianissimo to fortissimo.Mannheim rocket:Rapid upward arpeggio over a large range, combined with a crescendo.