Wired Productions has recently published a demo for Avicii Invector on Nintendo Switch. The demo itself only includes 2 songs across three difficulties settings. However, Wired Productions has tweeted a special code that players of the game can use to unlock a bonus song in the form of S.O.S. The code is as can be seen in the image below.
We have uploaded some gameplay footage of the Avicii Invector demo bonus song which you can check out below. Please forgive me for not being the best player of the game.
Source: Wired Productions (Twitter)