Last one!
24a. Trumpet playing drowned by cor anglais, initially (6). ?O?O?A
Please explain as I have not got a clue. And is cor anglais.
Thank you in advance!
corona: a crown-shaped, funnel-shaped, or TRUMPET-shaped outgrowth or appendage of the perianth of certain flowers, such as the daffodil or the spider lily. Also called crown. http://www.tfd.com/corona