Here are the top 10 classical songs according to the search results:

1. Jesu, Joy of Mans Desiring - Bach
2. Symphony No. 5: Allegro con brio - Beethoven
3. Eine Kleine Nachtmusik: Allegro - Mozart
4. Symphony No. 9 in D minor, Op. 125, "Choral" - Beethoven
5. Toccata and Fugue in D minor - Bach
6. Symphony No. 6, "Pathétique" - Tchaikovsky
7. Grosse Fuge, Op. 133 - Beethoven
8. Requiem - Mozart
9. St Matthew Passion - Bach
10. Vespers - Monteverdi

Its important to note that there are many other classical songs that could be considered "top" or "iconic," and this list is just a small selection based on the search results.