Born and raised in Tehran, Pashaei studied graphic design and had been interested in music since his childhood, when he began playing guitar.

His relatives denied the news but his official website announced that his planned concerts had been cancelled due to Morteza's illness.

His friend and fellow singer, Farzad Farzin, agreed to do the concert in his place, and perform all of Pashaei's songs in his honour.

Despite his own illness, he also cared for others as well: he accepted the ALS challenge and donated to the cause, while encouraging his fans and other fellow singers to pitch in to help as well.

His funeral was held on 16 November at Vahdat Hall and he was buried at Behesht-e Zahra in a private ceremony at night.