This fantastic icons set is a brilliant twist on the repetitive flat icons that are everywhere right now. Using the bright but desaturated colors, favored in flat design; the icons are attractive, cheerful and friendly.
In a fun twist the long shadow technique has been applied to actually increase the icons' 3D quality, rather than the usual approach of flattening it. The soft gradients, deep shadows and playful color scheme put us in mind of a FisherPrice toy, and these icons would definitely work well on a kids' site.
Particular favorites are the old fashioned record player and the even more old fashioned radio. Slightly more commonly required icons include the settings icon, represented by two cogs; and the comment icon, represented by a speech bubble with a 'plus' sign.