| D.O.U.B. T!!! (original club mix) | 4 Skips vs. Floorbreaker | | | ?:?? | |
| D.O.U.B.T!! !! ～愛の駆け引きはダ☆ウ☆ト☆～(Hostrance Version) | 4 Skips vs. Floorbreaker | | | ?:?? | |
| D.O.U.B.T!!!-Ai No Kakehiki Wa Doubt | 4SKIPS vs. FLOORBREAKER | | | 3:46 | |
| D.O.U.B.T!!!~愛の駆引きはダ☆ウ☆ト~ [kors k vs. OMEGA FORCE Remix] | 4 Skips vs. Floorbreaker | | | 6:08 | |
| D.O.U.B.T!!!～愛の駆引きはダ☆ウ☆ト☆～ (Kors K vs. Omega Force Remix) | 4 Skips vs. Floorbreaker | | | 3:42 | |
| D.O.U.B.T. ～愛の駆引きはダ☆ウ☆ト☆～ | 4 Skips, Floorbreaker & Ari | | | 3:20 | |
| D.O.U.B.T.!!!〜愛の駆引きはダ☆ウ☆ト☆〜 | 4 Skips vs. Floorbreaker | | | 3:20 | |
| DON'T LEAVE ME | 4 SKIPS vs. FLOORBREAKER | | | 2:54 | |
| Don't Leave Me ~Koi no Jumon wa DO*RE*MI~ | 4 Skips vs. Floorbreaker | | | ?:?? | |
| Don't Leave Me ~恋の呪文はド☆レ☆ミ☆~ | 4 Skips vs. Floorbreaker | | | 3:37 | |
| Final Answer!? (original mix) | Sham-Poo vs. 4 Skips | | | 2:19 | |
| Funky Typhoon (Harderground remix) | 4 Skips | | | ?:?? | |
| Hard Rock & Pinky Black (Like A Fire) | 4 Skips | | | 3:06 | |
| Hard Rock & Pinky Black (Like a Fire) (Initial P Hardstompin' remix) | 4 Skips | | | 5:11 | |
| Ki☆Se☆Ki☆ | 4 Skips Vs. Floorbreaker | | | 4:20 | |
| KI☆SE☆KI☆ | 4SKIPS vs. FLOORBREAKER | | | 3:39 | |
| Love & Sunshine (Delaction Remix) | 4 Skips | | | 4:06 | |
| Spike (Future Gate Official Bootleg mix) | Sham-Poo vs. 4 Skips | | | ?:?? | |
| Wanna Be Free | 4 Skips | | | 3:31 | |
| YOUR SONG (vocal trance version) | 4 Skips vs. B.R.G | | | ?:?? | |
