I'm editing a children's book which includes songs. I usually format the songs as a block quote in a slightly smaller type size and centred on the longest line. However, I've just come to a song that is part of a longer spoken speech. Do I put the end of quote marks at the end of the block quote or at the end of the normal speech before the block quote? Normally you don't put quote marks around a block quote as they are unnecessary but in this instance I'm not sure.