Duet arrangements of three well-known Vivaldi Concertos arranged for mandolin and guitar: Concerto in A (RV82), Concerto in C (RV425), and Concerto in D (RV93). Each arrangement in this collection has been reduced from soloist with string orchestra, to a duet for mandolin and guitar. The mandolin performs the solo part and the guitar part is a reduction of the strings. In the guitar part, chords have been added above the staff to allow for embellishment-a common practice of the Baroque era. Another C instrument such as flute, violin or another guitar can be easily substituted for the mandolin. Musicians will find these accessible arrangements excellent for performance in any setting from the recital hall to the local. The score (guitar/mandolin) and mandolin solo part are available in hard copy while the guitar accompaniment part is available as a free internet download. The mandolin and guitar parts are presented in notation.