Panorama steers a tour of the great composers and their very best music: works by Bach and Handel, by Mozart, Beethoven and Schubert, by Verdi and Wagner, by Rimsky-Korsakov and Prokofiev. Not only that, Panorama traverses the important epochs of musical history: the mysteries of Gregorian chant, the fascinating sound-world of the Renaissance, the splendours of the Baroque era." From DG's official page.
Here's the Spotify playlist: DG: Panorama Series (842 tracks, total time: 2 days) This playlist works better in Album view. My first Liszt album is the Panorama set, a great introduction indeed.