I don't have all the collections in Deemo so I only went through the ones that I had. I have also made a playlist of these songs. This list is for any use that one may have for this knowledge in a run and just a place holder so we don't have to always check if this song is short enough. https://youtube.com/playlist?list=PL_TQ1vIg1LJTGAhHFiecNrgj7v2LI13am

The criteria I had for these songs is if it had the same length or shorter as Dream by Rabpit. Also I am only using the times of the song and not including the pauses in-game before and after completing the song. These are also rough estimates with possible human error in timings. (Name of collection)

Below 2 minutes:

1. Flight of the Bumblebee (Etude) 1 minute 13 seconds
2. Mirage (Sdorica) 1 minute 28 seconds
3. Hear of Witch (DJMAX) 1 minute 36 seconds
4. Kimi no namae no kazegafuku (Collaboration) 1 minute 36 seconds
5. 3piece JazzParty! (Taiko no Tatsujin) 1 minute 38 seconds
6. Rayark 7th Main Theme (Collab) 1 minute 38 seconds
7. The Black Case (Cytus Vol.1) 1 minute 41 seconds
8. Thief of the Gleaming Star (Sdorica) 1 minute 44 seconds
9. Flowers Above Your Head (Eshen Chen) 1 minute 46 seconds
10. Wickedfate (M2U x Nicode) 1 minute 47 seconds
11. Moon Halo (M2U x Nicode) 1 minute 49 seconds
12. No Gravity (Taiko no Tatsujin) 1 minute 49 seconds
13. Sea Side Road (Eshen Chen) 1 minute 52 seconds
14. Falling Ears (Eshen Chen) 1 minute 52 seconds
15. Entrance (DV) (Deemo's Vol.1B) 1 minute 53 seconds
16. Beyond that notes (Feryquitous #2) 1 minute 54 seconds
17. Fluffie Partie (N.M.S.T.) 1 minute 54 seconds
18. Let's Meet Here Again (Sakuzyo #2) 1 minute 55 seconds
19. Almost Morning (Eshen Chen) 1 minute 55 seconds
20. Platinum (Deemo's Vol.1A) 1 minute 56 seconds
21. Stellar (M2U x Nicode) 1 minute 57 seconds
22. Lune (M2U x Nicode) 1 minute 59 seconds
23. Anima (Deemo's Vol.2) 1 minute 59 seconds

To be completed.