Initially his music was a mix of country and bluegrass instrumentation with rock harmonies of California surfer. The result was sensitive ballads with a touch country music and pop rock. His lyrics spoke of cars, relationships and lives without direction. The inventors of this type were fitted songwriters tremendously, including Gram Parsons, Jackson Browne, JD Souther, and Warren Zevon.
Eagles singer-songwriter spirit embedded within musical training, with a strong emphasis on arrangements and musicianship, and the group's initial sound became synonymous with the country rock southern California. In later albums, the group dispensed with bluegrass instrumentation and moved towards a more rock sound clearly.
With five singles and six number one albums, Eagles are among the best groups of the 70s study. At the end of the twentieth century, two of their albums, Their Greatest Hits (1971-1975) and Hotel California, were ranked among the top 20 selling albums in the U.S., according to the RIAA (The Recording Industry Association of America - Recording Industry Association of America). Also, according to Rolling Stone in 2004, the album "Hotel California" is ranked among the 500 best of all time, and the group ranked No. 75 on the list of the 100 greatest artists of all time. Until the death of Michael Jackson in 2009 (which has increased sales of his album Thriller) had to his credit the biggest selling album in the USA: Their Greatest Hits (1971-1975).
Eagles broke up in 1980 but got back together in 1994 to provide an acoustic concert, recorded on the album Hell Freezes Over, a mix of classic and new. They have been touring since then, and into the Rock and Roll Hall of Fame in 1998. In 2007, Eagles released Long Road Out of Eden, their first studio album after 28 years. The following year he undertook the tour Long Road out of Eden Tour, which took place in the year 2009 across North America and Europe. The first concert was on March 20, 2008 in London, England, and the last on July 22, 2009 in Lisbon, Portugal, giving two additional concerts on 17 and April 20, 2010 in Los Angeles, California.