21 has been a massive commercial success, selling over 30 million copies worldwide. The album has been certified multi-platinum in several countries, including the United States, the United Kingdom, and Australia. The album's success can be attributed to Adele's unique voice, songwriting skills, and the album's emotional resonance with listeners.

By using streaming services, online music stores, or free music platforms, you can enjoy Adele's 21 album without breaking the law. Always be sure to check the licensing terms and conditions before downloading or streaming music.

Adele's 21 album has had a significant impact on the music industry. The album's success has paved the way for other soulful and emotionally charged albums. The album's themes of heartbreak, love, and self-discovery have resonated with listeners, making it a classic in the music industry.

You can also purchase and download Adele's 21 album from online music stores such as iTunes, Google Play Music, or Amazon Music. These stores offer a wide selection of music, including Adele's 21 album.

Adele's 21 album is a classic in the music industry, featuring some of Adele's most iconic songs. The album's success has paved the way for other soulful and emotionally charged albums. While downloading copyrighted music without permission is illegal, there are several legal ways to download or stream Adele's music.