select rule type Expression Current Song's Song ID Current Song's Label ID Current Song's Artist ID Current Song's Album ID Current Song's Genre ID Current Song's Buyability Current Song's Play Count Current Song's Ownership type current time current date current weekday number of rule invocations random number timespan since first rule invocation = = > >= < <= is a multiple of < <= = > >= < <=   By type Not by type Owned Try and Buy Not Owned [YYYY-MM-DD] [24 HOUR FORMAT HH:MM] Sun Mon Tue Wed Thu Fri Sat played less than times during the last minutes songs Buyable Not Buyable [0-99] Minutes *