September 2014, Lucassen revealed that his collaboration with van Giersbergen was actually a new band, called The Gentle Storm. A cover EP entitled The Gentle Storm Exclusive Tour CD, and their first album, The Diary, were both released in 2015, with van Giersbergen writing all the lyrics and him composing the music. The band toured in 2015, without him; however he was featured on a few acoustic shows by the band in the Netherlands. Between 18 and 20 September 2015, a live version of The Human Equation, directed by Lucassen's former manager Yvette Boertje and featuring most of the original album's singers and musicians, took place for four shows. Although he was not involved in the creative process, Lucassen appeared at the end of each show, and acted as producer and mixer for the DVD/live album, entitled The Theater Equation and released on 17 June 2016. On 6 October 2016, Lucassen's next project was announced to be a new Ayreon studio album. After revealing the cast one by one during the following months, he revealed its cover art and title, The Source, on 19 January 2017. The album was released on 28 April 2017 and was a commercial success, topping the albums charts in the Netherlands at its release. Focus on Ayreon live performances (2017–present) In November 2016, Lucassen announced the first ever official Ayreon concerts for September 2017, entitled Ayreon Universe. The show featured 16 singers and 11 instrumentalists, all of which had previously worked together with Lucassen on his studio albums. Unlike The Theater Equation, it consisted of unrelated songs from Ayreon performed after each other as in a traditional concert, with a few songs from Star One featured as well. One of the performances was released as a live album/DVD on 30 March 2018, titled Ayreon Universe – The Best of Ayreon Live. On 7 December 2017, Lucassen stated that a new Ayreon concert would take place on 22 June 2018 at Graspop Metal Meeting, where they would headline the Marquee stage. It featured the same instrumentalists as the Ayreon Universe shows and most of its vocalists, along with Simone Simons, Barry Hay and Tom S. Englund, who had never performed live with Ayreon before, and Mark Jansen, who had never collaborated with Lucassen before; Lucassen himself also performed a few songs. Between 13 and 15 September 2019, the album Into the Electric Castle was performed in