featured as part of One Night Live in an unbroadcast epilogue wherein Joel plays the song to Ellie. According to Druckmann, Sony was doubtful that Naughty Dog would receive permission to use the song; the band's manager agreed after hearing the story pitch, receiving a PlayStation 4 and a copy of the original game, and an advanced screening of a trailer. Although the song's album Lightning Bolt was released two weeks after the onset of the in-game outbreak in September 2013, Druckmann recalled seeing a live performance of the song several months earlier in July, and felt that its inclusion was realistic. Shawn James was contacted by Sony in mid-2014 for permission to create a cover of his song "Through the Valley" for an upcoming game; James was unaware of how it would be used until he watched the game's first trailer at the PlayStation Experience in December 2016. Druckmann had specifically enjoyed the song and felt that it aligned with the game's darkness and emotion. The song went viral after the trailer's release, charting atop the Spotify viral charts in the United Kingdom. Naughty Dog was able to secure permission to use "Take On Me" by A-ha in one of the game's scenes due to Gross's friendship with Lauren Savoy, the wife of A-ha guitarist Paul Waaktaar-Savoy. Druckmann found that the song's lyrics addressed the game's themes in a lighthearted manner. He felt that the scene featuring the song being optional made it feel more important to the player, though the team considered making it unmissable instead. After Johnson worked with vocal coach Melissa Reese, the team felt that her singing was too refined, and asked her to consciously sing worse. Sound design A sound designer at Naughty Dog created a system that tracks the player character's level of exertion and plays matching respiratory audio effects. To create the sound effects for the Shambler, sound designer Beau Anthony Jimenez made a palatal clicking noise into a padded bucket via a tube, which he recorded with an ultrasonic microphone. He added this atop a slowed-down palatal sound to create the "Shambler Bark". Voice actors Raul Ceballos and Steve Blum contributed to the Shambler sounds, the former to screams and the latter to grunts. The explosion sounds were created by squeezing grapefruit and expanding a life jacket; for additional texture, he filled a bellows with oatmeal and blew it. The audio