Bluegrass is a genre of American roots music that originated in the 1940s, primarily influenced by Appalachian folk, jazz, and blues. It typically features acoustic instruments such as the banjo, mandolin, fiddle, guitar, and bass. The music is characterized by its fast tempos, intricate melodies, and tight harmonies, often showcasing virtuosic instrumental solos. The genre was popularized by musicians like Bill Monroe, who is often referred to as the "Father of Bluegrass." Bluegrass music is commonly performed in a group setting, known as a "band," where musicians take turns playing solos while others provide rhythmic support. It remains a vibrant part of American music culture today.