Istgah orchestra performed together with the master Naser Cheshmazar at the Vahdat Hall in 2017. Naser Cheshmazar as one of the most prominent musicians in the contemporary Iranian music era, will be reminded in the history of Iranian music with his excellent songs. Collaboration of Istgah orchestra with the master, paved the road toward an extraordinary success and public affability. The series of concerts of Naser Cheshmazar accompanied by Istgah orchestra involving 80 musicians, also known as “The Nostalgia Concert”, demonstrated the high quality of Istgah orchestra as the biggest private orchestra in Iran. These concerts were held with participation of guest singers such as Ashkan Khatibi.