Basically, electron pairs in a molecule want to adopt a geometry to maximize their distance apart, since like charges repel each other. For example, methane (CH4) adopts a tetrahedral arrangement - you can think of this as the carbon atom at the center of a pyramid and the 4 hydrogens at the four vertices. Bonds angles are 109.5 degrees. This is a case where all electrons are bonding electrons; they form the 4 bonds between carbon and hydrogen. Lone electron pairs also affect the geometry. For instance, water (H2O) has two lone electrons pairs; it adopts a bent/angular geometry.
Spotify is a music, podcast, and video streaming service, officially launched on 7 October 2008. It is developed by startup Spotify AB in Stockholm, Sweden. It provides digital rights management-protected content from record labels and media companies.
The Spotify mobile app takes all the functionality of the web player and puts it in the palm of your hand. When online it's easy to search for songs, discover new artists or listen to your favourite radio stations. For offline use, just sync your playlists and off you go.