It features footage and photos of Battle during her time with G.R.L., while the group sing in a room filled with hanging light bulbs.

[2] On September 5, 2014, band member Simone Battle was found dead by suicide in her home, a month after the release of G.R.L.

"[4] Paula Van Oppen stated that everything "came to a stop" for the group and it took four months for them to come together and discuss their future.

[4] They teamed up with Give an Hour, an American organization that helps raise awareness of mental health issues.

[4] The band wanted the topic of mental health and depression to be talked about more openly, especially among their younger fans, as well as what signs to look out for.

were unaware of what Battle was going through in the lead up to her death, so they wanted to spread the message about being open with mental health and to help people with it.

"[4] For the week commencing January 26, 2015, "Lighthouse" debuted at number 38 on the ARIA Singles Chart in Australia.

[6] The group wanted to make the video about Battle and worked closely with her family, who contributed footage and photos of her.