"Linger" (featuring Lupe Fiasco) was released as the fourth single in early December, 2014. It also reached number 17 and platinum certification. Tours Madness Tour In February 2015 Sebastian embarked on a six date arena tour in the mainland capital cities of Australia. He said that as the album was dynamic with big horns and drums an arena tour would enable him to replicate the album on a huge stage. The tour included two warm up shows in Dubbo. Fatai, a semi-finalist on the first The Voice series, was the support act. She returned to the stage to sing "Lightning" with Sebastian, a song she is the featured singer for on the Madness album. Sebastian performed with an eight piece band, and he played guitar and piano on some of the songs. Carmen Smith, Gary Pinto and Vince Harder were the backing vocalists, and also performed as backup dancers. The staging included large screens and LED lighting. Critical reception "Madness" has received a number of positive reviews. Jamie Horne, music journalist for the Border Mail, gave the album four out of five stars, saying "Sebastian is at the peak of his powers and it shines through on Madness". He said "Alive" was uplifting, and that "Linger" was a standout. Cameron Adams from the Herald Sun gave the album three and a half out of five stars, saying there were two sides to Sebastian, as apart from producing radio-friendly songs he "also has pop songs with depth and edge that are less instant, but more rewarding". He wrote that "the track "Madness" is epic but still subtle", "Linger" was "melow gold" and "The Pause" was a "stunning ballad" which "again reminds you the dude can really sing". Brad Szmerling of Music site auspOp noted that although Sebastian had released some polarising singles from the album, "Madness" was far better than those singles would indicate. He said "Elephant" and "Light & Shade" "both show off Guy's easy affinity with soul and R&B" and that "Linger" was catchy, reminding them of "some of Justin Timberlake's better moments". He said that overall Madness was "quite a varied and strong affair". Marcus Floyd from Renowned for Sound gave the album four and a half out of five stars, saying "Guy Sebastian's Madness is everything but, the singer/songwriter knows what works for him musically and he's running with it without sounding dated". He said the album