Start class: considerable information and a good infobox supplied; For C-class song/single article:  All the start class criteria   A completed infobox, including cover art and most technical details   At least one section of prose (excluding the lead section)   A track listing containing track lengths and authors for all songs   A full list of personnel, including technical personnel and guest musicians   Categorisation at least by artist and year  Reliable independent in-line references supporting claims  A casual reader should learn something about the song/single.  