4 Strings is a musical group founded by Carlo Resoort who was born on March 1, 1973, is a Dutch DJ, remixer and producer.

Carlo Resoort originally began working with Jan De Vos when they found a mutual interest in dance music. All of his albums as 4 Strings have been released in the U.S. via Ultra Records.

Carlo had his first hit with "Turn It Around", and later released "Take Me Away (Into the Night)" his second hit. Success in the United States of America has been limited to this point and they have only charted on the U.S., Dance Radio Airplay, Hot Dance Singles Sales, and Rhythmic Top 40 chart.

4 Strings currently consists of Carlo Resoort (who mostly creates the music) and Jan Loechel (who mostly works on production and arrangement, and performs some songs) and various guest artists on vocals.

In 2004, rumours surfaced of singer Vanessa van Hemert leaving the group, due to some new 4 Strings songs that were released which did not feature her. Although Resoort originally debunked the rumours, by the following year, van Hemert did leave the group.