"Maestero Mohammad Reza Shajarian, the distinguished artistic figure, has left a valuable legacy behind by creating the most enduring Iranian songs, including the Ramadan prayer. Surely, the honorable nation of Iran will keep the name, memory, and works of this beloved artist alive in their memories", Rouhani wrote on his Twitter account.
Shajarian passed away in Jam Hospital in Tehran after a long time struggle against cancer.
In March 2016, the internationally-acclaimed vocalist appeared on video after four years, announcing that he was suffering from cancer throughout the previous 15 years.
He was admitted to and later discharged from the ICU of Jam Hospital in Tehran several times since February when he was hospitalized first due to recurrence of lung disorders caused by heart disease.
Shajarian was last admitted to Jam Hospital’s ICU on Monday with unstable coronary and pulmonary conditions as well as hypotension and reduced lucidity.
Foreign Minister Mohammad Javad Zarif, First Vice President Es'haq Jahangiri, and Minister of Culture and Islamic Guidance Seyyed Abbas Salehi were among a host of high-ranking officials and dignitaries who have extended their condolences over his passing.
Shajarian started his singing career in 1959 at Radio Khorasan, rising to prominence in the 1960s with his distinct style of singing. The iconic vocalist was also known for his skills in Persian calligraphy, and humanitarian activities.
He was recognized as skilled singer in the challenging traditional Dastgah style. In 1999, UNESCO in France presented him with the Picasso Award and in 2006 with the UNESCO Mozart Medal. In 2017, Los Angeles Times cited him as the "Greatest living maestro of Persian classical music".
Shajarian’s albums in 2004 and 2006 won him nomination for Grammy award in the Best World Music section.
Among others, he is survived by his son Homayoun, who has managed to live up to his legend best so far.
“Maestro Shajarian was a great & true Ambassador of Iran, her children and—most of all—her culture. I extend my deepest condolences to Iranians across the world and partcularly to his loved ones. From God we come and to Him we return," Mohammad Javad Zarif wrote on his Twitter account earlier on Thursday.
IRNA and Press TV contributed to this story.