Good article about my one hymn (6)
I believe the answer is:
gloria
'hymn' is the definition.
(I've seen this before)
'good article about my one' is the wordplay.
'good' becomes 'g' (abbreviation).
'article' becomes 'a' (indefinite article).
'about' says to put letters next to each other.
'my' becomes 'lor' (exclamation of surprise).
'one' becomes 'i' (roman numeral).
'lor'+'i'='lori'
'a' put after 'lori' is 'loria'.
'g'+'loria'='GLORIA'
(Other definitions for gloria that I've seen before include "song used by worshippers" , "Hymn of praise" , "Part of the Mass; name" , "piece of church music" , "Doxology" .)