Adon haSelichot

Another song sung at this time of year.

This is an anacrostic piyut.

https://www.youtube.com/watch?v=0GfsXUt-3Ns
With pictures and translation.

https://www.youtube.com/watch?v=m0C8fb8eFDc
Simple

https://www.youtube.com/watch?v=k4wg1xFUopg
Interesting music style.

Very rough translation:
א Lord of forgiveness,
ב Examiner of hearts,  
ג Who unveils the depths,
ד Speaker of justice,
We have sinned before you, have mercy on us.
ה Glorious in wonders,
ו Great in consolations,
ז Remembering the covenant made with the forefathers,
ח Searching the reins,
We have sinned before you, have mercy on us.
ט Good and kind to all the created,
י Knower of all that is hidden,
כ Conquering iniquity,
ל Clothed in righteousness,
We have sinned before you, have mercy on us.
מ Full of merit,
נ Fearful in praises,
ס Forgiving iniquity,
ע Hearing in the time of trouble,
We have sinned before you, have mercy on us.
פ Working out salvations,
צ Seeing into the future,
ק Calling the generations,
ר Riding on the clouds,
ש Hearing prayers,
ת Perfect in knowledge,
We have sinned before you, have mercy on us.