Here is my translation of verse 6
ו וְעַתָּה יָרוּם רֹאשִׁי, עַל אֹיְבַי סְבִיבוֹתַי,
וְאֶזְבְּחָה בְאָהֳלוֹ, זִבְחֵי תְרוּעָה;
אָשִׁירָה וַאֲזַמְּרָה, לַיהוָה.
And now my head will be exalted, over my enemies all around me.
and I sacrifice in His tent, my sacrifices of shouting (or shofar sound)
I will sing and I sing praises to HaShem.
The verb forms of וְאֶזְבְּחָה and וַאֲזַמְּרָה threw me for a bit, since I do not recognize them. I want to make them translate: "I will sacrifice/I will sing", because of the א prefix, but can't really explain the ה tacked on the end. If any readers can share insight on these rare verb forms, it would be great!