Apart from tiny boost circuits, a tremolo is generally the simplest effect pedal you can make. All you’ll need to do is vary the amplitude of the guitar’s signal at regular intervals.

Surf guitar is iconic. The moment you hear a tremolo-picking slide you can instantly imagine surfers riding waves and hanging 10. A few simple playing techniques and gear choices are great tools ...

exploring the rich sounds of the guitar and its relatives in music from seven centuries. Sean Shibe on nostalgia and tremolo technique in a piece by Sainz de la Maza.