AC-DC is an Australian rock band formed in 1973, known for their high-energy music and electrifying performances. The band's sound is characterized by powerful guitar riffs, catchy melodies, and a blend of hard rock and blues influences. Their iconic songs, such as "Back in Black" and "Highway to Hell," have made them one of the best-selling music acts in history. The name AC-DC refers to the electrical terms "alternating current" and "direct current," symbolizing the band's dynamic and powerful style. The group has undergone several lineup changes over the years, but the core elements of their music remain consistent, appealing to fans across generations.