There are three reasons why songs from the same album may not be grouped together
- The album names of the songs may differ slightly
- The songs from the same album may have different artists
- Not all songs in the album have the same "Album Artist" assigned to it
In the example below the two songs appear to have the same album name, however, if you look closely the first song includes an additional space between the words "Darker Side of the" and "Moon" that the second song does not have.
Slight variations in spacing, spelling, or punctuation of the album name can cause iTunes to consider the two songs to be from separate albums. Be sure that all the songs that are supposed to be from the same album have the exact same album name. One way to easily do this is to select all the songs and choose Get Info from the File menu and retype the album name such that it will apply to all the selected songs.
Albums with various artists
Some albums include songs from multiple artists. Because of this iTunes may display them as separate album as shown below:
You can mark these songs as a compilation in iTunes. In iTunes 8 and later, you find the option to mark multiple items as "Part of a compilation" in the Options tab of the Multiple Item Information window.
To do this in iTunes 7, select all the songs that you want to be included in the compilation and select Get Info from the file menu and select Yes in the Compilation menu as shown below. After clicking OK iTunes will group all the selected songs together.
Albums in which all songs don't have the same Album Artist information
iTunes 7 and later includes a new attribute for song files called Album Artist This allows you to assign a primary artist name for an album that many includes songs by several artists. It is important that all songs in the album have the same Album Artist name. To assign an Album Artist, select all the songs in the album and choose Get Info from the File menu. Next, type a name in the Album Artist field name such that it will apply to all the selected songs. This field can optionally be left blank if all the songs have the same album name. The Album Artist field is shown in the picture above
The solutions above also apply to situations where multiple album covers for the same album are seen in cover flow as shown below
Cover Flow View