This is the first of the six toccatas in Froberger's Libro Quarto of 1656. It is a typical Froberger toccata in five sections alternating sections of free rhapsodic material with sections of imitative counterpoint. The two sections with imitative counterpoint use subjects with some thematic relationship; however, the relationship is not as close in many of the toccatas from the Libro Secondo of 1649. One of the most interesting moments in the piece occurs right before the end when Froberger sends a scale careening to a high g''' only to leave it hanging returning to the F sharp just above middle C after an eighth note rest. The quirkiness of the free sections in Froberger's toccatas was particularly famous. The wild freedom in the free sections of toccatas like this one was considered by Johann Mattheson, a prominent music historian and music critic in the early eighteenth century, to be the purest and best example of the stylus fantasticus.

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