ROMANTIC GUITAR MUSIC. A William IV playbill advertising a performance by 'The Celebrated Guitarist Giulio Regondi' at the Town-hall Alnwick, 14th November 1833, inscribed with a letter verso by J. Regondi to Dr. Billing, 28cm x 22cm, within a gilt frame. Note: Giulio Regondi was a child prodigy on the guitar and an instrumental figure in the development of the guitar as a concert instrument. The manuscript letter to Dr Billing, a patron of the guitarist, provides a fascinating insight into the life of a touring musician in the early 19th century, specifically the 6-string Romantic guitarist (at this date the 6-string guitar was an instrument in its infancy), the manuscript alludes to the Violinist Nicollo Paganini as a womanizer, the luthier Gennaro Fabricatore, various patrons of Regondi, as well as the guitarist's itinerary and hopes for the future.