"I Knew You When" is a song by Canadian pop rock band Marianas Trench. It was released on November 16, 2018, as their first single from their fifth studio album Phantoms. The song was accompanied by its music video released in December 2018. It reached within the top 30 on the Canada CHR/Top 40 and Canada Hot AC airplay charts.
Composition and lyrics The band announced a new single titled "I Knew You When" would be coming and teased a preview via social media on November 5, 2018. The track has been described as a dance-oriented and pop rock song, highlighting the band's musical growth. Lead singer Josh Ramsay spoke to Substream Magazine on the meaning behind the song.
Ramsay wrote and produced the track. The song runs at 106 BPM and is in the key of E major.
Music video The music video for "I Knew You When" was released on YouTube on December 19, 2018, and was directed by Kyle Davison.
Personnel Credits for "I Knew You When" adapted from album's liner notes.
Marianas Trench Josh Ramsay – vocals, rhythm guitar Matt Webb – lead guitar, backing vocals Mike Ayley – bass, backing vocals Ian Casselman – drums, backing vocals
Production Josh Ramsay – producer, arrangement, engineering, mixing Zach Blackstone – assistant engineering Ted Jensen – mastering Dave Rave – mixing
Charts + Chart performance for "I Knew You When" Chart (2018−19) Peak positionCanadian Digital Song Sales (Billboard) 18 Canada AC (Billboard) 33 Canada CHR/Top 40 (Billboard) 27 Canada Hot AC (Billboard) 21
References