What is a Tremolo (Strings)?

Tremolo on string instruments is a technique in which the performer rapidly repeats a note by moving the bow back and forth very quickly across the string. This creates a shimmering, vibrating sound rather than a clearly separated series of notes.

In notation, tremolo is often indicated by slashes through the stem of a note or between two notes. It can involve repeating a single pitch rapidly or alternating quickly between two different notes.

Tremolo is commonly used in orchestral, film, and dramatic music to create tension, intensity, or atmosphere. The effect can make a passage sound energetic, suspenseful, or emotionally charged, especially when used by the entire string section.