I think I've finally finished doing the best I can to find all the missing Iranian songs previously posted in this thread. Two of them have parts that are not in Persian but rather in English (in one case) and Russian (in another).
This is an Iranian song called "Vase To" and sung by Black Cats, which has a few lines in English as well:
https://www.youtube.com/watch?v=g1B6q4sVjikI think this Afghan song may also have been posted before. It's a song by Sediq Shabab called "Ma Che Kardam":
https://www.youtube.com/watch?v=Kom0fGrjH14This is "Dooset Daram (Lublyu Tebya)," an Iranian song by Samir and Peyman in Persian and Russian:
https://www.youtube.com/watch?v=MWB17u861KAThis is a popular (but folk-ish or folk pop-y) Afghan (Tajik-ish?) song by Khujasta Mirzovali and Madina Aknazarova called "Az Man Chara Ranjidai":
https://www.youtube.com/watch?v=tLu-fVNYqHMI'm not absolutely sure whether this was posted before, but there was a song by Aghasi performed before that's apparently very popular, and this is a song called "Lab-e-Karoon" that seems pretty popular:
https://www.youtube.com/watch?v=b18RB5ZV3PgA rendition of the Afghan folk song "Sabza Ba Naz" by Niyaz:
https://www.youtube.com/watch?v=fE3_GNaekzMApparently, someone once posted a song in Esfahani called "Khahish Mikunem Naro." I'm not sure whether this one by Nahid is it, but it's my best guess for now at least:
https://www.youtube.com/watch?v=Fyx1OzZUVyENiyaz's rendition of "Biya ki Burem ba Mazar," featuring A. R. Rahman(!!!):
https://www.youtube.com/watch?v=tFyrYwmE5A0This is an Iranian song by Sirvan Khosravi called "Oon Rooza":
https://www.youtube.com/watch?v=gIrU9M8qadA"Hargez az Yaad," perhaps the most famous song of Afghan singer Ahmad Morid (sorry for the poor audio quality):
https://www.youtube.com/watch?v=dW-ceyOiUu8This is "Sorna-ye-Nowruz," a song by the Iranian folk band, Rastak:
https://www.youtube.com/watch?v=3IOMAXbwBl4Another song by Ahmad Morid performed in Hamburg, I guess called "Bahar-i-Tu":
https://www.youtube.com/watch?v=SqqSUO8aiQkThis is an Iranian song by Zedbazi called "Bekhand Masnooyi" that I remember was posted here before:
https://www.youtube.com/watch?v=SEJb3vK-NuwThis is a Tajik song I happened to find pretty randomly that's a bit of a mystery to me for now (currently, it's one of the top results in YouTube for "Tajik song," at least for me). The performers in the video at least very much remind me of Shahrizoda:
https://www.youtube.com/watch?v=VQSV4eHSwRoNot 100% sure, but I think "In Kherghe Biandaz" by O-Hum was posted here earlier, too:
https://www.youtube.com/watch?v=qHIPBZcyXJoAnother mystery Tajik song (as mysterious as the other one for me):
https://www.youtube.com/watch?v=IH4FD38EBVk