The building momentum or movement of independent or "underground" bands of a particular sound or style who are on the cusp of making it to "the next level"
LA's knocks from the underground are showing a promising future for psychedelic music.
The German version of "Dot all the I's and cross all the T's." To make sure something is done in the proper manner, without even a minor or technical error.
During John Demjanjuk's trial for his infamous WWII-era war crimes, the prosecuting attorney had to make sure to dot all the umlauts in every motion he made before the court.