They created a music croup called "Leyla The Band" after series finished. Mecnun (Ali Atay) on the vocal, bass guitar; Ismail Abi (Serkan Keskin), Keyboard; Yavuz (Osman Sonant), drum; Onur Unlu (director).
The trivia item below may give away important plot points.
After series ended, same group created a new series called "Ben de Özledim". At the first episode; Burak Aksak -director- told the final of Leyla ile Mecnun. Which it was (still) a dramatic scenario. But it's good to remember that; scenario based on a true story about paralytic child. Actual story it is: *Mecnun; is a boy who had a traffic crash. After crash the boy has paralyzed. *Leyla(s); are the girl who Mecnun fell in love before the accident on a school. The reason of there are multiple Leyla on the series is because of the girls in the tv Mecnun watched. After accident he started to forgetting Leyla. *Erdal Bakkal; is an salt cellar when Mecnun's father trying to feed him. *Ismail Abi; is a Japanese fish where is front of Mecnun's bed in the aquarium. The reason of why Ismail Abi wears colorful things all the time is about that (Japanese fishes are colorful). One day Mecnun's father put another to aquarium but it lived just for 1 day. Ismail Abi's sadness about that. *Yavuz; is a trees' shadows through the window which comes from out. Yavuz's personality comes from there. Mecnun imagine that shadows as a thief because of it comes from window, shadows are black and it seems only at nights. *And finally, Ak Sakalli Dede; is an vaccine, and the syringe is Ak Sakalli Dede's baton. He (-vaccine-) fight with microbes on Mecnun's body. On the other hand; Karabasan (Nightmare, Arda's father). After truths told by Burak Aksak (scenarist) on the Ben de Özledim, all Leyla ile Mecnun fans were upset. And that is the real story of that series.