The Secret Of The Long Face

There are places (Oberland & Germany) where the Minhag was for the Chazan who Davens Ma'ariv on Motzei Shabbos Selichos to sing the Vehu Rachum with a special Niggun.

The Imrei Pinchos says it is called "The long Vehu Rachum" based on the Sod of אריך אנפין  (long face) Kabalistic term for Hashem being patient

with us and giving us more time to do Teshuva.

Growing up as a child I do remember Der Lange Vehu Rachum and the Chometzdike Borchu. The Chazzan stretched out the Hu from Vehu and

(on Motzei Pesach) the Chu.from Borchu.