>>49922368
Here's a list of Luka songs I scoured NicoNico for after they got taken down from Youtube and I couldn't find other uploads. Some of them are songs I liked during my search.
https://www.nicovideo.jp/watch/sm13042205
https://www.nicovideo.jp/watch/sm11170921
https://www.nicovideo.jp/watch/sm12833017
https://www.nicovideo.jp/watch/sm15435674
https://www.nicovideo.jp/watch/sm13659648
https://www.nicovideo.jp/watch/sm10571396
https://www.nicovideo.jp/watch/nm10057527
https://www.nicovideo.jp/watch/sm10502910
https://www.nicovideo.jp/watch/sm7897854
https://www.nicovideo.jp/watch/sm9537339
https://www.nicovideo.jp/watch/sm17962569
https://www.nicovideo.jp/watch/sm17795728
https://www.nicovideo.jp/watch/sm20411276
https://www.nicovideo.jp/watch/sm34551467
https://www.nicovideo.jp/watch/sm19180245
https://www.nicovideo.jp/watch/sm38662481
https://www.nicovideo.jp/watch/sm6002524
https://www.nicovideo.jp/watch/sm10069323
https://www.nicovideo.jp/watch/sm10783716
https://www.nicovideo.jp/watch/sm7000696
https://www.nicovideo.jp/watch/sm17986313
https://www.nicovideo.jp/watch/sm38909950
https://www.nicovideo.jp/watch/sm12776861
https://www.nicovideo.jp/watch/sm9949472
https://www.nicovideo.jp/watch/sm9517316
https://www.nicovideo.jp/watch/nm10007815
https://www.nicovideo.jp/watch/sm17632327
https://www.nicovideo.jp/watch/sm9927677
https://www.nicovideo.jp/watch/sm37258163
https://www.nicovideo.jp/watch/sm7307575
https://www.nicovideo.jp/watch/nm11432361
https://www.nicovideo.jp/watch/sm9533658
https://www.nicovideo.jp/watch/sm20295012
https://www.nicovideo.jp/watch/sm6502616
https://www.nicovideo.jp/watch/sm35485264
https://www.nicovideo.jp/watch/nm7659676