I tried to guess them all, but for some, I used google to find literal meaning or the artist. (Bolded)
1- I swear (Like caroline said above), all 4 one
2- Flashlight, Jessie J? Torch song?
3- Highway song
4- Triple X
5-Wonderwall, Oasis
6-
7-Do the bus stop
8-Free Animals or Circle of Life
9-
10-Soon, Tanya
11-Water Fountain (Alec benjamin, not sure tho)
12 Smells like Teen Spirit!!! Nirvana <3
13-Don't look back in anger (Oasis)
14 Shooting star?
15- The might be giants, Women and Men
16
17- Black or white, MJ <3
18-We didn't start the fire, Joel
19-Learn to Fly, Foo Fighters
20- Save the night, John legend? OR Save Tonight (JL is too recent)
21-London bri... (Like 13 said above) OR Look on down from the bridge.
22
23 Bizzare love triangle?
24 - Breakfast at Tiffanys (not sure)
25-Genie in the bottle (Like 13. said above)
26 something Disney related
27 (looks like Freddie Mercury lol)
28-Love goes both ways?
29- IM BLUE DA BA DEE DA BA DAE!!!!!
30 Goodbye
(also, It's 5 .18 am and I playing this instead of going to sleep...lol)