WHAT a splendid weekend to be a music lover in Glasgow, with the complementary strands of the BBC SSO's shattering Rite Of Spring on Thursday followed by a wonderful RSNO performance on Saturday of Mendelssohn's Elijah, with a perfect cast and everyone in fantastic voice, the RSNO Choruses singing as though their collective life depended on it, and the magical catalyst of conductor Sir Andrew Davis finding in the piece warmth, pain and passion in a gloriously expansive performance which at once gave it teeth by singing it in German (we should call it Elias, not Elijah) while purging it of the accretions of Victoriana.