A sampler is an electronic musical instrument that records and plays back samples. Samples may comprise elements such as rhythm, melody, speech, sound effects or longer portions of music.

In sound and music, sampling is the reuse of a portion of a sound recording in another recording. Samples may comprise elements such as rhythm, melody, speech, or sound effects. A sample can be brief and only incorporate a single musical note, or it can consist of longer portions of music, and may be layered, equalized, sped up or slowed down, repitched, looped, or otherwise manipulated. They are usually integrated using electronic music instruments (samplers) or software such as digital audio workstations.