Egypt's underground rock scene

An Egyptian youth dances during a "Mahraganat" (Arabic for "festivals") concert in Cairo, April 6, 2013.

A new musical sound has emerged from Egypt's underground music scene since the country's 2011 revolution: a rapid-fire electronic beat, mixed with hypnotic rhythms drawn from religious festivals and fired up with auto-tuned vocals.

Besides getting club crowds dancing all night long, it has given a rebellious voice to long marginalized youth, telling stories of everyday life in beaten-down neighborhoods of Cairo.

Fans of "Mahraganat" singers Sadat and Fifty, not pictured, dance during their performance at the International Film Festival in Ismailia, 86 miles from Cairo, June 6, 2013.

Egyptian youths dance as "Mahraganat" singers, Fifty and Sadat, not pictured, perform at a wedding in Madinet el-Salam on the outskirts of Cairo, Egypt, June 2, 2013.

Fans of "Mahraganat" singer Fifty react to his performance at the International Film Festival in Ismailia, 86 miles from Cairo, June 6, 2013.

Egyptian youths dance during a "Mahraganat" concert in Cairo, April 6, 2013.

An Egyptian man dances, as "Mahraganat" singers, Fifty and Sadat, not pictured, perform at a wedding in Madinet el-Salam on the outskirts of Cairo, June 2, 2013.

"Mahraganat" singer, Fifty, center, performs at a wedding in Madinet el-Salam on the outskirts of Cairo, June 2, 2013.

Egyptian youths dance as "Mahraganat" singers, Fifty and Sadat, not pictured, perform at a wedding in Madinet el-Salam on the outskirts of Cairo, June 2, 2013.

Egyptian youths linger outside the music studio, top center, of "Mahraganat" singers Sadat, Fifty, and Haha, in Madinet el-Salam on the outskirts of Cairo, June 18, 2013.

An Egyptian man and woman dance, as "Mahragan" singer Fifty, not pictured, performs at a club in downtown Cairo, June 15, 2013.

Egyptian youths listen to music during a "Mahraganat" concert in Cairo, April 6, 2013.

Egyptian youths attend a "Mahraganat" concert in Cairo, April 6, 2013.

"Mahraganat" singer, Sadat, performs at a wedding in Madinet el-Salam on the outskirts of Cairo, June 2, 2013.

Egyptian youths dance during a "Mahraganat" concert in Cairo, April 6, 2013.

Egyptian girls dance during a "Mahraganat" concert in Cairo, April 6, 2013.

"Mahraganat," singer, Fifty, rides in a three-wheeled taxi, or "toktok," as he makes his way to perform at a wedding in Madinet el-Salam on the outskirts of Cairo, June 2, 2013.