The venues of Hafez's performances in North America included Los Angeles’ Kodak Theatre – the most highly attended Persian classical music concert outside of Iran – the Atlanta Symphony Hall and traveled to San Francisco, Washington, D.C., and Boston.

Steeped in both the improvisatory tradition of his native Iran and Western classical music’s rich harmonic structures, Nazeri takes a boundary-crossing approach, balancing the two and forging a “new sonic universe” altogether.

[6] In the words of the composer, "Untold is the first cycle of my Rumi Symphony Project and portrays the story of our universe from the dawn of time until the very end, through my eyes.

[8] After the release of Hafez Nazeri's first album and the publication of his claims regarding his musical activities and education in the U.S., Sadjad Pourghanad was the first person to criticize him in HarmonyTalk journal.

[9] Thought he had scheduled a live presentation of Untold in Iran for September 2014,[10] the concert had to be cancelled due to foreign players being denied the necessary visa to enter the country.