The origin of modern J-pop is said to be Japanese-language rock music inspired by the likes of The Beatles. Unlike the Japanese music genre called kayōkyoku, J-pop uses a special kind of pronunciation, which is similar to that of English. One notable singer to do so is Keisuke Kuwata, who pronounced the Japanese word karada ("body") as kyerada. Additionally, unlike Western music, the major second (sol and la) was usually not used in Japanese music, except art music, before rock music became popular in Japan. When the Group Sounds genre, which was inspired by Western rock, became popular, Japanese pop music adopted the major second, which was used in the final sounds of The Beatles' song "I Want to Hold Your Hand" and The Rolling Stones' song "(I Can't Get No) Satisfaction". Although Japanese pop music changed from music based on Japanese pentatonic scale and distortional tetrachord to the more occidental music over time, music that drew from the traditional Japanese singing style remained popular (such as that of Ringo Shiina).