A music album is a collection of audio recordings that are released together, typically featuring multiple songs by an artist or a group. Albums can vary in length and style, often showcasing a specific theme or concept. They are usually produced in various formats, including digital downloads, CDs, and vinyl records. Albums are an essential part of the music industry, allowing artists to present their work cohesively. They often include a mix of singles, which are songs released separately to promote the album, and deeper tracks that may not receive as much attention. Notable examples of albums include The Beatles's Sgt. Pepper's Lonely Hearts Club Band and Michael Jackson's Thriller.