I’m still buzzing from a thrilling experience I had last week in Boston. For two nights, I teamed up with the Boston Pops and conductor Jacomo Bairos to host a live performance of my public television concert “Rick Steves’ Europe: A Symphonic Journey.” Together, we shared seven stirring anthems from the Romantic era that celebrate how different European countries mix a love of music with patriotism. I got to be the tour guide, setting up each piece with historical and cultural context — and t...