1970s Mandrell; all scored hits throughout the 70s which reached both country and pop charts. The genre also saw its golden age of vocal duos and groups in this decade; with Conway Twitty and Loretta Lynn, George Jones and Tammy Wynette, Jim Ed Brown and Helen Cornelius, the Bellamy Brothers, the Oak Ridge Boys, the Statler Brothers, Dave & Sugar, and The Kendalls. A major event in music in the early 1970s was the deaths of popular rock stars Jimi Hendrix, Janis Joplin, and Jim Morrison, all at the age of 27. Two of popular music's most successful artists from other
Ouija Adventure Series Book 1) by Shelby White centers on a group of friends who unintentionally release evil through their use of a Ouija board, as does "The Harrowing" by Alexandra Sokoloff. In "For What It's Worth" by Janet Tashjian a boy uses a Ouija board to contact the spirits of Janis Joplin, Jimi Hendrix, and Jim Morrison. Issue #79 of "Bart Simpson", a comic book series based on The Simpsons, contains a story called "The Demon" in which Bart and Lisa find a Ouija board and unleash a demon. Issue #10 of "Bart Simpson's Treehouse of horror" contains the story