This is a collection from Lanyi Toys (you will not find manufacturer markings on the toys, but they are available to buy from the brand’s Aliexpress store). There are characters based on the Mane 6 in princess-style bodies, plus Celestia and Nightmare Moon (those two are a little larger than the others). They light-up and play music (which is actually the theme song to Disney’s Sofia the First).
These are 6″ tall (Fashion Style size). The wings and horn light up (no music):
