What are the album titles for albums containing both 'Reggae' and 'Rock' genre tracks?
select t1.title from album as t1 join track as t2 on t1.albumid = t2.albumid join genre as t3 on t2.genreid = t3.genreid where t3.name = 'Reggae' intersect select t1.title from album as t1 join track as t2 on t1.albumid = t2.albumid join genre as t3 on t2.genreid = t3.genreid where t3.name = 'Rock'