According to Official Guinness Records,
Collectively, the cast members of the TV series Glee (USA) amassed a record 131 different Hot 100 entries in the US between 6 June 2009 and 2 April 2011. As an example of their success, they had 54 chart entries in their first 54 weeks. It should be noted, though, that the vast majority of these tracks spent only one week in the chart. In their first 16 months, in total to October 2010, they had 11.5 million single tracks downloaded in the US alone and 2.8 million albums.
For a complete list of 2011 records, please visit 2011 Guinness Records in United States.