Classical guitar for repertoire of all periods is sometimes critically viewed: Torres and post-Torres style modern guitars (with their fan-bracing and design) have a thick and strong tone, very suitable for modern-era repertoire. However, they are considered to emphasize the fundamental too heavily (at the expense of overtone partials) for earlier repertoire (Classical/Romantic: Carulli, Sor, Giuliani, Mertz, ...; Baroque: de Visee, ...; etc.). "Andrés Segovia presented the Spanish guitar as a versatile model for all playing styles" to the extent, that still today, "many guitarists have tunnel-vision of the world of the guitar, coming from the modern Segovia tradition". While fan-braced modern
Classical guitar with additional strings adopted the 8 string guitar on many of his presentations also Australian guitarist Sirsom Solo-Jazz plays the 8-string Classical guitar (B.E.A.D.G.B.E.A tuning). The Brahms guitar was developed by guitarist Paul Galbraith and luthier David Rubio to allow the music of Brahms to be played more comfortably on the guitar. Information: 8 string guitar Late 18th and early 19th century method books for nine-string guitars exist, but examples of these instruments are rare. Modern nine-string guitars are almost exclusively steel-string or electric instruments. Includes the Decacorde - a historical romantic guitar - which was tuned C2-D2-E2-F2-G2-A2-D3-G4-B4-E4 and the modern 10-string guitar,