Music Nirvana’s “All Apologies” Gets A Bluegrass Treatment Jan 25, 2018 FacebookTwitterPinterestWhatsAppLinkedinReddItEmailPrint Bluegrass musicians Iron Horse perform a rather uplifting version of Nirvana’s All Apologies. The bands roots go back to the late 1970s, when Tony Robertson and Ricky Rogers were charter members of the popular local group, The Next in Line.