Get the Tone
Ideally for Biréli’s gypsy tone you need a Selmer-style acoustic, although there is a great clip on YouTube of him tearing through Minor Swing on a Yamaha Pacifica. For his electric jazz sound, the perfect choice is a hollowbody with flatwound strings. But of course these examples will work fine on any good guitar. For extra authenticity it’s good to note that Lagrène holds the pick sideways and addresses the string with one of the rounded, fatter shoulders to get less‘click’and a more rounded bloom to each note.