"Flush" is a song by American rock musician Brian "Head" Welch that was released as the first single from his debut album, Save Me from Myself, on July 8, 2008 exclusively on the iTunes Store.

In the digital booklet that came with "Flush", composer Brian Welch commented on the production of the song. The song was "created accidentally" in 2005. Welch had just finished writing the song "Save Me from Myself" and was planning to leave the studio for the night. However, he lost the key to the studio, and decided to remain there while his friend brought the key to him. While Welch was waiting for his friend, he had the thought "I'm gonna go back inside, grab my keyboard, and whatever my hands do, I'll make a song out of it." He immediately started playing the opening riff for "Flush". Welch then recorded the idea. When recording the sound of him puking for the beginning of the song, Welch brought a microphone into the studio bathroom. He then "[made] a huge cup of chunky liquids" and puked into the toilet.

In the digital booklet that came with "Flush", composer Brian Welch discussed the themes that inspired the song lyrically. He explained that "Flush" is about "flushing all the crap in life down the toilet and starting out fresh." When he wrote the lyrics, he recalled when he was younger. Welch commented, "All the drama that I experienced with getting drunk and doing drugs all the time seemed interesting and amusing to write about. That life style is total insanity and I'm glad to be out of it." He went on to say that the purpose of the song is to inspire alcoholics and drug addicts to "get clean" and that "if I can encourage even one drug addict or alcoholic to get clean with 'Flush,' then the song has served its purpose."

The music video for "Flush", directed by Frankie Nasso of Nova Entertainment, was released on September 5, 2008. According to a press release about the music video:

[The music video] takes a surprising turn away from what the conservative press would expect from Head and his spiritual awakening and takes an 'in-your-face,' gritty, but very honest look at the depths to which individuals will go to satisfy their drug/alcohol addictions or other vices. Wrapped with footage of real-life stories, and overlayed with other innuendo, Head's performance steals the picture and will answer anyone's questions as to whether he can still rock as hard or harder than his earlier days in Korn. The literal message in the final screen will get viewers thinking long and hard about any pre-conceived judgments they have about those in society typically viewed as losers.

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Wikipedia