Sentimental ballads are found in most music genres, such as pop, R&B, soul, country, folk, rock and electronic music.[3] Usually slow in tempo, ballads tend to have a lush musical arrangement which emphasizes the song's melody and harmonies. Characteristically, ballads use acoustic instruments such as guitars, pianos, saxophones, and sometimes an orchestral set. Many modern mainstream ballads tend to feature synthesizers, drum machines and even, to some extent, a dance rhythm.[4]