I wouldn't call Wagner's Ride of the Valkyries "beautiful"... epic perhaps but not beautiful... but i do agree on Beethoven's 9th Symphony especially the Ode to Joy part... but here are two more to round off my top 3 at the present time:
Canon in D major for strings and continuo by Johann Pachelbel (the best version is the one conducted by Jean-Francois Paillard)
Etude, Op.10. No.3 in E "Tristesse" by Frederic Chopin (sad but beautiful, about lost love.... it's rumored that Chopin wrote it for a woman he loved in his youth and lost to someone else) << listen to this one and tell me what you think...