and others have performed along with other singers from different Asian countries. During the recent years such as 2006 and beyond, Vietnamese pop music has tremendously improved from years past. Vietnamese music has been able to widen its reach to audiences nationally and also overseas. There are many famous underground artists such as Andree Right Hand, Big Daddy, Shadow P (all featured in a popular song called Để anh được yêu) or Lil' Knight and countless others who have risen to fame through the Internet. In addition, there are also other singers that have gone mainstream such as M4U, Hồ Ngọc Hà, Bảo Thy, Wanbi Tuấn Anh, Khổng Tú Quỳnh, Radio Band, etc. There are also amateur singers whose songs have been hits in Vietnam such as Khởi My, Tóc Tiên, Văn Mai Hương,... These singers tend to view singing as a hobby, therefore not being labeled as mainstream artists. Overall, the quality of recording and the style of music videos in Vietnam has improved a lot compared to the past years due to many private productions and also overseas Vietnamese coming back to produce a combination of Western and Vietnamese music. Rock and heavy metal Introduced by American soldiers, rock and roll was popular in Saigon during the Vietnam War. This genre has developed strongly in the South and has spread out over the North region after the rise of Bức Tường in the 90s. For the last 10 years, metal has become more mainstream in Vietnam. Ngũ Cung and Microwave are the current top Vietnamese metal bands in the 21st century. Hip Hop and Rap The early 1990s Hip Hop import into Vietnam. However, due to language limitations, the number of listeners is not much. Until the early 2000s, hip hop begins to grow in Vietnam become a movement of young people. Not long after that, the movement quickly subsided and many turned their backs on Hip Hop and Rap. Although it can be considered as the freezing period of Vietnamese Hip Hop, it also helps Vietnamese Underground Hip Hop become more stable when the true continues the mission of making this culture ever stronger and promises more and more talents are born from this cradle. Until the early 2005s new groups and communities were born Most prominent is Wowy a famous rapper in Vietnam in 2005s, and DSK ("Die Sonnen Kinder" or "Da Sun Kid") is called