Many congregations open the נעילה service with a song (a choral rendition of which can be found here) asking 'ה for forgiveness and a good year before the Heavenly gates close:
אל נורא עלילה - Italy [unidentified]
[DH] Amsterdam - אל נורא עלילה
Baghdad [YH] - אל נורא עלילה
Syrian [EL] - אל נורא עלילה
Below is a series of recordings by MF of the סליחות that are recited in KAYJ during חזרת השץ of נעילה (many of which are actually borrowed from daily סליחות):
פתח לנו שער - היום יפנה - אנא אל נא
(on שבת:
One last תקיעה to signal the formal end of the יו"כ services (serving as well as a זכר to the שופר that was blown at the start of יובל):
KAYJ [MK] - תקיעה גדולה