Last summer, mashup artists Kurt Schneider and Sam Tsui released their ‘Summer Pop Medley,’ racking up more than three million views on YouTube in the process.

Now the producer and singer are back with ‘Summer Medley 2011,’ in which they deftly blend snippets from Lady Gaga’s ‘The Edge of Glory,’ Katy Perry’s ‘Last Friday Night,’ the LMFAO singalong ‘Party Rock Anthem’ and more of 2011′s biggest pop hits into one smooth four-minute creation.

Whether you love or hate the songs is kind of irrelevant — the harmonies and melding of musical genres on this mash-up are pretty phenomenal. Check it out below.

[via Buzzfeed]

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