Pianissimo/ˌpiːəˈnɪsɪməʊ/ Definition 1 of 2Pro Tip 1/3Orchestral Use Common in orchestral instructions, signifying a need for a very gentle touch. The conductor marked the score 'pianissimo' for a delicate sound. Pro Tip 2/3Dynamic Contrast Used to create contrast in music, makes louder sections stand out. After a loud crescendo, the pianist returned to a haunting pianissimo. Pro Tip 3/3Solo Performance In solo music, pianissimo challenges the performer's control and precision. Her piano solo was mesmerizing, especially the pianissimo parts.