Famous Classical Music that was ALMOST LOST 

Bizet's teenaged masterpiece the Symphony in C was first played in the 1920's.

The Shostakovich Waltz No. 2 wasn't from the Jazz Suite No. 1 either, it was from a completely separate suite usually translated as "Suite for Variety Orchestra"

Schubert had a lot of music that wasn't really "lost", but many of the pieces that are now considered among his best were left unpublished at his death and were later discovered and performed decades later

This was wonderful! Thanks, I learned a lot. I first heard the Haydn C maj. cello concerto played by the great Jacqueline du Pré in a broadcast concert in the 1960s. I will always remember the way she tore into those double stops in the opening solo. I've never heard such conviction in a musical artist! As for Vivaldi's "Gloria," one of my favorite musical works, I first listened to and and sang it during the 1960s. Little did I know that its first modern performance had been only a decade earlier. Regarding composers and their musical legacies, I have read that Corelli intended his works to be of value to future generations (I will have to confirm this). As for musical jokes, such as the long lost "Pesce D'Aprile," there's Mozart's "Ein musikalischer Spaß." I would love to see a video about humor in music!

Heinrich Schütz is also such a case were a HUGE chunck of his body of work was lost. Today only what he publised survived. Which is basically completely sacred music and none of it instrumental. But Schütz wrote instrumental and secular music, even operas. It's just that ALL of it is lost. Only his sacred vocal music survived. That's because in his day the works belonged to the noblemen he wrote them for and then they vanished in the turmoils of the 30 year war, burned with the private libraries they were stored it.

In addition to what's in the video, I was quite surprised to find out that the Amen fugue sketch in Mozart's Requiem wasn't discovered until fairly recently, the 60s if I'm not mistaken. Which is also mind-blowing imo

I love the Brandenurg Concertos ;P

Hope the Passion According to St. Mark by Bach will be discovered someday.

Enjoyable video but the scores are "autograph" as in written in the composer's hand, and not "autographed" as in just signed by the composer. Another great re-discovery was Rossini's opera Il Viaggio a Reims. It was written for the coronation of King Charles 10 of France and required such a large cast of star singers that it was thought to be impractical to perform outside of grand ceremonial events. Some of the music was re-used and the rest was scattered. It was reconstructed in the 1970's and performed for only the 5th time in 1984. The plot is little more than an excuse for some spectacular music.

Brazilian composer Heitor Villa-Lobos 5th symphony is lost.

The comments about Haydn were very unfortunate; both inaccurate as to fact - the C major is the first of his two extant cello concertos, and erroneous in judgement - ‘minor classic’ (and passed over in a few seconds) is simply an unforgivable slur.

Spell check your title!

Why are there two rediscovery no. 4s