That blooming vessel in a new album! (8)
I believe the answer is:
laburnum
'that blooming' is the definition.
I can't tell whether this defines the answer.
'vessel in a new album' is the wordplay.
'vessel' becomes 'urn' (urn is a type of container).
'in' means one lot of letters goes inside another.
'a new' is an anagram indicator.
'album' anagrammed gives 'labum'.
'urn' put into 'labum' is 'LABURNUM'.
Can you help me to learn more?
(Other definitions for laburnum that I've seen before include "Tree or shrub with bright yellow flowers" , "Poisonous shrub with yellow flowers" , "Plant with hanging clusters of bright yellow flowers" , "Ornamental tree with hanging clusters of yellow flowers" , "Flowering tree" .)