Musicals in Anna Nager Yamaha I455 Of the 753 voices and 206 styles built-in, 19 voices feature Indian instruments and 26 styles provide automatic accompaniment ideal for Indian music. Naturally, the electronic Tabla and Tanpura—which are indispensable to this type of music—can also be found here. In fact, this keyboard’s Tabla and Tanpura can be set and played in exactly the same way as stand-alone instruments. What’s more, the PSR-I455 also comes with raga-mode practice songs that can be conveniently used for instrument and voice training.