Start class: 

 *  A reasonably complete infobox 
 *  A lead section giving an overview of the album 
 *  A track listing 
 *  Reference to at least primary personnel by name (must specify performers on the current album; a band navbox is insufficient) 
 *  Categorisation at least by artist and year 

 C class: 

 *  All the start class criteria 
 *  A reasonably complete infobox, including cover art 
 *  At least one section of prose (in addition to the lead section) 
 *  A track listing containing track lengths and authors for all songs 
 *  A "personnel" section listing performers, including guest musicians. 

 B class: 

 *  All the C class criteria 
 *  A completed infobox, including cover art and most technical details 
 *  A full list of personnel, including technical personnel and guest musicians 
 *  No obvious issues with sourcing, including the use of blatantly improper sources. 
 *  No significant issues exist to hamper readability, although it may not rigorously follow WP:MOS