I’ve sung so many works over the years I can’t remember them all. Because of that, this list is not exhaustive, it’s just my favorites I can think of at this moment. To make it on the list, the piece has to have a significant choral portion. One of my favorite works is Holst’s Planets, but it’s not included here because the only vocal aspect is a quiet, ethereal humming on one movement. It’s not one of my favorites to sing, though it rates higher than some of the works listed here as one to which I love to listen.
In no particular order:

• Carmina Burana ~ Everyone is familiar with this work, because it’s commonly played in commercials and movie trailers. It is FUN to sing.
• Beethoven’s 9th Symphony ~ This work is largely orchestral, but the choral part is significant and transcendent. This is another everyone knows.
• Mozart’s Requiem ~ There’s a reason Mozart is so famous.
• Verdi’s Requiem ~ This work has strangely majestic passages for a Requiem. Verdi’s penchant for operas shows.
• Handel’s The Messiah ~ Oh, I just adore this piece. I’ve performed this work more than a dozen times, and it never gets old. The more familiar it becomes, the more I love it. The marriage of scripture with the music is a large portion of its appeal. “I Know That My Redeemer Liveth” will probably always be among my favorite songs. And, of course, who doesn’t love belting out the “Hallelujah Chorus“? Every time we get to “the kingdom of this world is become…the kingdom of our Lord, and of His Christ” my face just about breaks from the joy of it.