He worked with many Iranian poets and composers and produced several popular songs, which were broadcast on the radio and TV stations, with several reaching the top ten records at the time.

Due to these distressing outcomes and also because of the Islamic Revolution of Iran, Agassi relocated to the United States in the late 1970s for the social and political freedom there.

In the 1980s, the Iraqi government also became rather vehement towards his songs, as they emboldened the Assyrians of Iraq, who opted for peace, freedom and human rights.

His trip was under the supervision of the allied forces, which prompted the Iraqi government to create a power outage in Northern Iraq, and sent assassins for an attempt on his life.

[7] Up until the 2020s, he had concerts regularly in North America, West Asia, Europe and Australia, and had visited England, Germany, Canada, France, Austria, Netherlands, Russia, Syria, Iran and Northern Iraq.

Agassi's last public performance was at an annual Valentine's Day party in Chicago in February 2024, and his last overseas concert was in Sydney in August 2023.

[10] On X, the Assyrian American National Federation stated Agassi's voice "was not just a sound, but a powerful force that united generations, carried our culture across borders, and kept the spirit of our heritage alive in every corner of the globe".

[8] The head of the Department of Ethnic and Religious Components at the Kurdistan Region Presidency, Florin G. Seudin, offered her grief and condolences, where she stated that "we lost one of the greatest artists in the Assyrian nation".

"[11] On 22 September, more than 700 people attended the St. Hurmizd Assyrian Church of the East in Greenfield Park, Sydney, for a memorial mass to honor the late singer.

Tributes were made by Agassi's dedicated fans, that included local poets, Assyrian singers and Bishop Mar Meelis Zaia.