Silhouette is a song by Japanese rock band KANA-BOON, released in 2014 and used as an opening theme for Naruto Shippuden, which helped it reach a large international anime audience. Bass-boosted versions later circulated online as short, louder edits, shared on video platforms and soundboards for use in fan edits and memes. The style exaggerates the track's low frequencies, turning a familiar opening hook into a punchier clip that works well in short-form video, and it remains popular because listeners recognise the melody instantly even when the bass dominates the mix.