Tom Morton

WP Lazy Spotify allows music sites to speed up their page loads by lazy loading each spotify track or playlist on a page. Your users can hover to load the track or allow WP Lazy Load to load them as the user scrolls.
This plugin utilizes David Bushell’s amazing SocialiteJS plugin [http://www.socialitejs.com/].

WP Lazy Spotify

WP Lazy Spotify allows you to lazy load multiple tracks and playlists from Spotify.

NEOLiNES

Link Spotify tracks to your posts and pages using uri-based shortcodes.
Ex. 
[spotify:track:2lBpN5CZ3zLyVIPejUhN6Y]
Attention! 
At this moment you can NOT link albums, playlists or artists, just tracks.

WP-Spotify

Link Spotify tracks to your posts and pages. Including widget.

WP Lazy Spotify vs WP-Spotify