Alexander Gradsky
... that Alexander Gradsky is believed to be the first Russian artist to have performed rock and roll music in a concert, when he was 13 years old?
... that <b id="mwD_Q"><a href="./Alexander_Gradsky" id="mwD_U" rel="mw:WikiLink" title="Alexander Gradsky">Alexander Gradsky</a></b> is believed to be the first <a href="./Russia" id="mwD_Y" rel="mw:WikiLink" title="Russia">Russian</a> artist to have performed <a href="./Rock_and_roll" id="mwD_c" rel="mw:WikiLink" title="Rock and roll">rock and roll</a> music in a concert, when he was 13 years old?