The success of their first single made Vital Signs much more popular, and they were soon discovered by famous PTV music producer and film director Shoaib Mansoor at the local concert, who was impressed with Vital Signs' ""Do Pal Ka Jeevan"" single. The next day, Mansoor called the band and asked them to do a national song which would go on-air all over the country. Written by Shoaib Mansoor and composed by Hyatt, the song which was named "Dil Dil Pakistan" became a huge success, much shocking Hyatt. It was released in the summer of 1987 as a video directed by Shoaib Mansoor, in which the Vital Signs are shown singing the song over what looked like the lush hills of Islamabad. It was an instant hit and later was voted as the third most popular song of all time by BBC World. However, the allure of instant success and the amount of interest Shoaib was ready to invest in the band kept Rohail and Shahzad going and convinced Junaid to hang around for at least the recording of their first album. The band lead guitarist, Nusrat Hussain, left the band and suggested Rohail Hyatt to bring Salman Ahmad as his replacement.