TREY SONGZ "Here Ya Go, Uncle Sam ... $750K AIN'T A THANG!"

#1 Trey Songz just set a glowing example in the eyes of the IRS by erasing $748,870.08 worth o' debt in less than 3 weeks.

The federal tax lien was for Trey's 2013 income. The IRS hit him with the bill on Oct. 8, but according to docs obtained by TMZ, he was able to pay the whole thing off by the 28th. Shows you what kinda deep pockets Trey's got these days.

#2 Clean slate with Uncle Sam? Only one thing left to do ...