chanson is especially popular among adult males of the lower social class. Electronic music in modern Russia is underdeveloped in comparison to other genres. This is mostly due to a lack of promotion. There are some independent underground acts performing IDM, downtempo, house, trance and dark psytrance (including tracker music scene), and broadcasting their work via internet radio. They include Parasense, Fungus Funk, Kindzadza, Lesnikov-16, Yolochnye Igrushki, Messer Für Frau Müller and Zedd (Russian-German artist). Of the few artists that have broken through to the mainstream media, there are PPK and DJ Groove, that exploit Soviet movie soundtracks for their dance remixes. In the 2000s the Darkwave and Industrial scene, closely related to Goth subculture, has become prevalent, with such artists as Dvar, Otto Dix, Stillife, Theodor Bastard, Roman Rain, Shmeli and Biopsychoz. Hardbass, an offshoot of UK Hard House originating in Russia in the late 1990s, has spread internationally via the internet, with acts such as DJ Blyatman, Hard Bass School, & XS Project amassing significant followings. The profile of classical or concert hall music has to a considerable degree been eclipsed by on one hand the rise of commercial popular music in Russia, and on the other its own lack of promotion since the collapse of the USSR. Yet a number of composers born in the 1950s and later have made some impact, notably Leonid Desyatnikov, who became the first composer in decades to have a new opera commissioned by the Bolshoi Theatre (The Children of Rosenthal, 2005), and whose music has been championed by Gidon Kremer and Roman Mints. Meanwhile, Gubaidulina, amongst several former-Soviet composers of her generation, continues to maintain a high profile outside Russia composing several prestigious and well-received works including "In tempus praesens" (2007) for the violinist Anne-Sophie Mutter. The early 2000s saw a boom of musicals in Russia. Notre-Dame de Paris, Nord-Ost, Roméo et Juliette, and We Will Rock You were constantly performed in Moscow theatres at the time. The popularity of musicals was hampered by the 2002 Moscow theater hostage crisis and was only revived at the end of the decade. 2010s saw the rise of popularity of Russian hip hop, especially rap battles on the internet by artists like Oxxxymiron and Gnoyny, among others. Ethnic roots music Russia today is a multi-ethnic state with over 100 ethnicities living under one flag. Some of these ethnic groups has their own indigenous folk,