Unlike Twitter, Spotify isn’t looking to build an entire standalone music service – they already have that. But they are interested in discovery, like Twitter, and to that end the company has just acquired a Swedish music discovery app called Tunigo.

All Things D reports the buy, which is for an undisclosed amount. Tunigo is a music discovery app that is available on iPhone, Android, and as a Spotify app. Tunigo is playlist-focused, and features hand-curated selections from the Tunigo team as well as ones from the Tunigo community. Playlists are arranged based on moods, events, activities, and more interesting ways.

According to the report, all of Tunigo’s 20 or so employees will become part of Spotify’s team. The Tunigo apps should keep working as usual.

“The acquisition fits into our overall strategy around music discovery, basically helping our users make sense of over 20 million tracks,” a Spotify spokesman told GigaOm.

We mentioned Twitter because the social networking site just recently unveiled their own music discovery service, Twitter Music. That product came out of the acquisition of We Are Hunted, another music discovery app. It’s interesting that Spotify would make this purchase just a couple weeks after Twitter launched their new standalone service, don’t you think?