Hello Again is a musical with music, lyrics and book by Michael John LaChiusa. It is based on the 1897 play La Ronde by Arthur Schnitzler. It focuses on a series of love affairs among ten characters during the ten different decades of the 20th century.

Michael John LaChiusa is an American musical theatre and opera composer, lyricist, and librettist. He is best known for musically esoteric shows such as Hello Again, Marie Christine, The Wild Party, and See What I Wanna See. He was nominated for four Tony Awards in 2000 for his score and book for both Marie Christine and The Wild Party and received another nomination in 1996 for his work on the libretto for Chronicle of a Death Foretold.