Complex sentence: The album was initially supposed to be released in February 2006, but was pushed back several times, due to executive changes at Sony (the parent company of Columbia) and the executives' desire to have "another lead single" on the album.
Split into simpler sentences: The album was initially supposed to be released in February 2006, but was pushed back several times. The delay was due to executive changes at Sony (the parent company of Columbia) and the executives' desire to have "another lead single" on the album.