New British music, Brahms, Liszt and a lavish choral work blaze a trail for some of 2011's Proms musical strands. Benjamin Grosvenor made his Proms debut, and there's Janáček's extraordinary celebration of Slavic culture, the Glagolitic Mass.Friday 15 July7.30pm – c. 9.40pm Royal Albert HallChoral music and singing events, Piano musicJudith WeirStars, Night, Music and Light (c4 mins)BBC Commission, World PremiereBrahmsAcademic Festival Overture (11 mins)LisztPiano Concerto No. 2 in A major (20 mins)INTERVALJanáčekGlagolitic Mass (45 mins)Benjamin Grosvenor pianoHibla Gerzmava sopranoDagmar Pecková mezzo-sopranoStefan Vinke tenorJan Martiník bassDavid Goode organBBC SingersBBC Symphony ChorusBBC Symphony OrchestraJiří Bělohlávek conductor