Complex sentence: This was the 3rd time he has honored someone at the Kennedy Honors in 2004 he honored Elton John with "Saturday Night's Alright For Fighting" and in 2010 he along with Wille Nelson and Jamey Johnson honored Merle Haggard with "Ramblin Fever".
Split into simpler sentences: This was the 3rd time he has honored someone at the Kennedy Honors. In 2004, he had honored Elton John with "Saturday Night's Alright For Fighting" and, in 2010, he, along with Wille Nelson and Jamey Johnson, honored Merle Haggard with "Ramblin Fever".