This is hard... I always get really carried away. I went through my iPod and made a massive list, but I narrowed it down to spare you.
Top 10 most positive songs I recommend:
1.
Beautiful Morning ~Ace of Base
2.
Heut' Ist Mein Tag ~Blumchen
("Today is My Day" - German)
3.
Sunrise ~Bennie K
(Japanese)
4.
Don't Stop Movin' ~Livin' Joy
5.
Life Is Sweet ~Natalie Merchant (I think the studio version is better, but all I could find was a live version)
6.
The Journey Home ~Sarah Brightman
7. Я с тобой ~Юлия Савичева
("I'm With You" - Russian)
(I don't know why I can't find this on YouTube...)
8.
It's Time ~Lebo M (from the Lion King album, Rhythm of the Pride Lands)
(English/Zulu)
9.
Work That ~Mary J. Blige (I just found this fanmade video, and it cuts off the beginning of the song.)
10.
Why Not ~Hilary Duff
There are too many worship songs I could add... unfortunately most of what I have can't be found online.
Another group I really recommend (my favorite) is Qkumba Zoo (QZoo on their second album). They have a lot of incredibly positive songs... Rain, The Child (Inside), Big, Mermaids, Happy Earthday, Time of Wonder, Beautifull, DNA, and even Butterfly People & Let the Light In have beautifully uplifting lyrics, even though the music is slow. You might have a hard time finding some of their songs though.
Wait, wait! I have a couple of really cheesy positive songs I have to post.
Tubthumping ~Chumbawumba
Best I Can ~Queensryche
And these are just some really perky songs I also recommend... the lyrics don't have as much meaning as the ones above, but the music is uplifting and the songs are fun...
Dragostea Din Tei ~O-Zone
Caramelldansen ~Caramell
Matalij ja Mustii ~Värttinä
Bluebeard ~Cocteau Twins
Love Tropicana ~Sister Mayo (from Jungle wa Itsumo Hale Nochi Guu)
Spice Up Your Life ~Spice Girls
19-2000 ~Gorillaz
Hawaiian Rollercoaster Ride ~Jump5 (cover from Lilo & Stitch)
Diamonds in the Sky ~TJ Davis (from Sonic R)
...and pretty much every song by Temperance
