محمد رضا شجريان

In response to Ahmadinejad’s earlier speech calling the supporters of Mousavi “brushwood and thorns,” Iran’s most famous classical musician has ordered that Iranian government television/radio never play his music again. Mohammad Reza Shajarian told BBC Persian in an interview:
“Don’t broadcast my voice on Seda va Sima [IRIB Music channel] ever again: my voice is like brushwood and thorns, and it will forever remain brushwood and thorns!”

From 'NIAC' here.