Letting Go is the EP of Lo-Pro, initially available only during concerts in July and August during the "Stimulate This" Tour with Staind, Shinedown, Chevelle and Halestorm. It was reported to be released digitally in September 2009, but was eventually pushed back to October 21, 2009. This is their first formal release of music in six years, since their self-titled album in 2003. In the past, Lo-Pro has claimed to be working on "over 26 songs" for a future release. Despite this, five of the six tracks on it were later put on their full-length album The Beautiful Sounds of Revenge, to be released on June 8, 2010.

Lo-Pro's starting work on new material dates back to 2005, shortly after they were dropped from the Geffen Record label. In summer 2005, they showed their first example of this new material when they streamed a copy of a new song, "Ingenious", from their Myspace, which, in the end, was not put on the EP. They continued stream songs in various fashions in the coming years as well, some making the EP, others not. A demo of Breathe was streamed from their Myspace in the summer of 2006 and a demo of "Texas" was starting summer 2007.

Additionally, in early 2008, a full concert from 2007 was made available for streaming, which included live acoustic renditions of "Hang On", "Today", and "Letting Go". One other new song, "All I Have", was also performed at these concerts too, but was not put on the EP. On occasion, Aaron Lewis of Staind had also played on live versions of "Letting Go".

All songs except "Alive" were reworked and re-recorded in the studio before being released on the EP; "Alive" was the only track not to have been streamed beforehand in either live or demo form. It was, however, one of the songs made available to download for free shortly before the band started touring, in which the band started selling the EP at concerts. The EP versions of "Alive", "Texas", and "Breathe' had been made available for free download on July 4, 2009.

It was released physically at concerts on July 14, 2009, and digitally on October 21, 2009. Surprisingly, "Alive" was at the last second, taken off of the EP for its iTunes release. Singer Pete Murray later claimed this was due to its inclusion on Lo-Pro's upcoming June 8, 2010 release The Beautiful Sounds of Revenge although it was later revealed that all songs except for "Today" were indeed put on it. *The Beautiful Sounds of Revenge contains every EP track, except "Today". The songs that were on both releases are identical to each other, with no noticeable differences.

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