SongPop2 2.17.42 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The program lies within Games, more precisely Family. We recommend checking the downloaded files with any free antivirus. This free software for Mac OS X was originally created by Freshplanet, Inc.
From the developer:
SongPop 2 is a song trivia game in which you need to guess the song. You can take this musical quiz and play online with people from all around the world. You can challenge your friends with trivia that includes songs from all musical styles. If you love trivia and music, you will definitely like SongPop.
You may want to check out more software for Mac, such as Name that iTune!, Animals Coloring Book or Etoys, which might be related to SongPop2.