Best Singles Halfway Mark

Halfway through the year and the artists below have all released strong singles worthy of making my year end lists:
Lady Gaga, Flo Rida, Lily Allen, Animal Collective, Kelly Clarkson, Glasvega, Chris Isaak, Sugarland, Knaan, Jimmy Wayne, Flatlanders, Ida Marie, Britney Spears, Kanye West, Asher Roth, Black Joe Lewis