A Tower Defense Simulator X, developer and creator John Roblox, music tracks taken from: The Gee J, Devbags.

TDX (Tower Defense X) - Tutorial OST

Phoenix Original Soundtrack of Tower Defense X TDX OST By Devbags

All credit for the song goes to The Gee J, will private when he uploads the track to soundcloud.

Defend or Defend -TDX OST

[Pre]radicator  - TDX OST

The Bop  - TDX OST

attention! / Внимание!
  Most of the tracks were re-uploaded by fans, thank you, enjoy listening!😃  Playlists have been restored. / Большинство треков были перезалиты фанатами  спасибо вам, приятного прослушивания!😃 Плейлисты были восстановлены.
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I create playlists with music from TDХ so you don't have to ;) / Создаю плейлисты с музыкой из ТДХ чтобы вам не пришлось ;)

TDX (Tower Defense X) - Tutorial OST

The G.D.A. [RUSSIAN DEVISION]