I finally got a functional .sdat file from this demo all thanks to ‪@project_omega‬ who allowed me to use his file.

You can also download it from : https://gamebanana.com/sounds/73186
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Game : トモダチコレクション　体験版 (Tomodachi Collection: Demo Version)
Console : Nintendo DS
Release Year : 2009
Composers : Daisuke Shiiba ; Ryutaro Takahashi ; Riyu Tamura ; Asuka Ito
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BPM : 119

Timestamps :
0:00 [Channel 4]
1:30 [Channel 2 ; 3]
2:53 [Channel 1 ; 5]
4:16 [Channel 1 ; 4 ; 5]
5:38 [All Channels]
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VG Music Studio download : https://github.com/Kermalis/VGMusicSt...
Corrscope download : https://github.com/corrscope/corrscope