Based on the provided information, here's a sample 80s themed playlist to keep your guests entertained for 4 hours: "Billie Jean" by Michael Jackson "Sweet Child O' Mine" by Guns N' Roses "Don't Stop Believin'" by Journey "Like a Virgin" by Madonna "Bohemian Rhapsody" by Queen "I Wanna Dance with Somebody" by Whitney Houston "Take on Me" by a-ha "Livin' On A Prayer" by Bon Jovi "Hungry Like the Wolf" by Duran Duran "Material Girl" by Madonna "Under Pressure" by Queen & David Bowie "Every Breath You Take" by The Police "Sweet Dreams (Are Made of This)" by Eurythmics "Eye of the Tiger" by Survivor "Girls Just Want to Have Fun" by Cyndi Lauper "Beat It" by Michael Jackson "Karma Chameleon" by Culture Club "Footloose" by Kenny Loggins "With or Without You" by U2 "Everybody Wants to Rule the World" by Tears for Fears "Call Me" by Blondie "Wake Me Up Before You Go-Go" by Wham! "Purple Rain" by Prince "Let's Dance" by David Bowie "Africa" by Toto "Tainted Love" by Soft Cell "Time After Time" by Cyndi Lauper "The Final Countdown" by Europe "Total Eclipse of the Heart" by Bonnie Tyler "Don't You (Forget About Me)" by Simple Minds ...And many more. Remember to gradually build up the energy and then mellow down towards the end of the party. Also, remember to avoid songs by Justin Bieber as per your preference. Happy party planning!