Não é apenas 1 consulta... Onde a prioridade é tanto> ou =0
select Name, Priority
from Music
where `Priority` >= 0
AND `date` > '2014-10-27 20:04:25'
order by `Priority` DESC, `date`
select Name, Priority
from Music
where `Priority` >= 0
AND `date` > '2014-10-27 20:04:25'
order by `Priority` DESC, `date`