Night Ranger is an American rock band from San Francisco that gained popularity during the 1980s with a series of albums and singles. The band's first five albums sold more than 10 million copies worldwide. The quintet is perhaps best known for the power ballad "Sister Christian", which peaked at #5 in June 1984.

After their success waned in the late 1980s, the band split up in 1989 and its members pursued other musical endeavours including group and solo efforts. Several members released an album without original singer/bassist Jack Blades in 1995, but the band soon re-united to release two new albums in the latter half of the decade. Despite the departure of original keyboardist Alan Fitzgerald and guitarist Jeff Watson, the band has continued to tour and remains very popular in Asian countries, especially Japan.

The group's origin can be traced to Rubicon, a pop/funk group led by Jerry Martini, who gained fame as a member of Sly and the Family Stone. After Rubicon's demise in 1979, bassist Jack Blades formed a hard rock trio with two other Rubicon members, drummer Kelly Keagy and guitarist Brad Gillis. Performing under the name Stereo, the threesome added keyboardist Alan Fitzgerald, a former member of Montrose, in 1980. Fitzgerald soon recommended enlisting a second virtuoso guitarist, so Jeff Watson, who led his own band in Northern California, was added to the group. The seeds were sown for a new melodic hard rock band, initially called simply Ranger.

John Michael "Ozzy" Osbourne (born 3 December 1948) is an English heavy metal vocalist and songwriter, whose musical career has spanned over 40 years. Osbourne rose to prominence as lead singer of the pioneering English band Black Sabbath, whose dark and hard sound helped spawn the heavy metal genre. Due to Sabbath's dark style, Osbourne became known as the "Prince of Darkness". Osbourne is also known as the "Godfather of Heavy Metal".

In the early 2000s, Osbourne's career expanded when he became a star in his own reality show The Osbournes, alongside wife/manager Sharon and two of their three children, Kelly and Jack. A documentary about his life and career, God Bless Ozzy Osbourne, premiered in April 2011 at the Tribeca Film Festival and was released on DVD in November 2011. Osbourne has achieved multi-platinum status as a solo artist and with Black Sabbath and has sold over 100 million albums worldwide.