There are several types of ukulele, including the soprano, concert, tenor, and baritone, each with its own unique sound and characteristics. The soprano is the smallest and most common type of ukulele. It is known for its bright, cheerful sound and is often used in traditional Hawaiian music. The concert ukulele is slightly larger than the soprano and has a fuller sound. It is often preferred by intermediate players who want a richer tone. The tenor ukulele is even larger than the concert ukulele and has a deeper, more resonant sound. It is often used in jazz and other genres where a more mellow tone is desired. The baritone ukulele is the largest type of ukulele and has a sound similar to a small guitar. It is often used by musicians who want a fuller, more bass-heavy sound.