SongDex is a directory of standard popular music in America. SongDex provides an unmatched source of reference to the great American songs and songwriters of the 20th century. Its foundation is a searchable database of more than 50,000 songs and instrumentals that have constituted the music enjoyed by Americans through its greatest entertainers, in person and by means of the recordings, piano rolls, radio, jukeboxes, theatre, movies, and television that have made possible its immense popularity. SongDex also features biographies of the leading songwriters, and much more.