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 by audiences in the USA. The classical guitar repertoire also includes modern contemporary works – sometimes termed "New Music" – such as Elliott Carter's "Changes", Cristóbal Halffter's "Codex I", Luciano Berio's "Sequenza XI", Maurizio Pisati's "Sette Studi", Maurice Ohana's "Si Le Jour Paraît", Sylvano Bussotti's "Rara (eco sierologico)", Ernst Krenek's "Suite für Guitarre allein, Op. 164", Franco Donatoni's "Algo: Due pezzi per chitarra", etc. Performers who are known for including modern repertoire include Jürgen Ruck, Elena Càsoli, Leo Brouwer (when he was still performing), John Schneider, Reinbert Evers, Maria Kämmerling, Siegfried Behrend, David Starobin, Mats Scheidegger, Magnus Andersson, etc. This