Conductor Elias Grandy leads the Qatar Philharmonic Orchestra in a program pairing two titans of 19th-century Romanticism. The evening opens with Mendelssohn’s Symphony No. 3, the “Scottish”, inspired by the composer’s visit to the ruins of Holyrood Chapel in Edinburgh and suffused with the moods of the Scottish Highlands. After the intermission, the orchestra turns to Richard Wagner, beginning with the intimate Siegfried Idyll, composed as a birthday gift for his wife Cosima, followed by the dramatic Tannhäuser Overture.