with director Shoaib Mansoor to film Guitar '93, a Pepsi-financed venture featuring videos shot all across Pakistan. Aetibar and Greatest Hits (1993–1995) After the departure of Salman Ahmad, Hyatt's childhood friend Rizwan-ul-Haq was asked to join the band as lead guitarist. Rizwan, an electrical engineer, left Islamabad for Karachi to join the band and the Signs began work on their third album in Rohail Hyatt's studios, Pyramid Studios, in 1993. The third album Aitebar, which soon outsold its predecessor, Vital Signs 2, was an ultimate success. The Signs then started their nationwide tour and collaborated with Shoaib Mansoor who directed "Guitar '93, a compilation of videos of Vital Signs' biggest hits thus far. It shot across the four provinces and was financed by Pepsi Pakistan Inc. Made for PTV, Guitar '93 was an entertaining document of the band's progress as one of the best pop/rock acts in Pakistan. With the release of Guitar'93, it was Rizwan who gained a lot of publicity and notability, and Signs also played their highest number of concerts in 1993. The biggest took place at the KMC Stadium in Karachi, a mega-concert headlined by the Signs and also consisting of performances from The Milestones, Awaz and the newly formed rock band, Arsh. Former member Salman Ahmad was present in the audience. It was after this concert Rohail first started to show signs of agitation regarding his growing dissatisfaction with Rizwan-ul-Haq's playing and his expenses. The success of Aetibar and Guitar'93 marked a great opportunity for Signs. The Signs marked its very first international tour to US in 1993, becoming the first Pakistan musical act to do so. Hum Tum (1995) and world tours In 1994, the band did not extend the contract for its guitarist, Rizwan-ul-Haq, despite his urgings. Rizwan was relieved and "shown the door" after which Hyatt chose technical guitar whiz Aamir Zaki to become the band's new lead guitarist. The Signs made its second tour to the United States with Zaki on board as the band's lead guitarist. Soon returning, the band started to work on their fourth and final installment, Hum Tum. Zaki was given the impression he was joining the band as a full member, not a session player, but was asked to leave after recording just three songs of the album. In a book, "Personal Biography" on Signs published online, Zaki had serious disagreement with the band leader, Hyatt,