Like some of Bach’s music, full of runs and economical (6)
I believe the answer is:
frugal
'economical' is the definition.
(synonyms)
'like some of bach's music full of runs' is the wordplay.
'like some of bach's music' becomes 'fugal' (Johann Sebastian Bach composed several fugues).
'full of' indicates putting letters inside.
'runs' becomes 'r' (cricket abbreviation).
'fugal' placed around 'r' is 'FRUGAL'.
'and' acts as a link.
(Other definitions for frugal that I've seen before include "not extravagant" , "Taking care" , "Thrifty or parsimonious" , "Thrifty - meagre" , "'Sparing, economical (6)'" .)