Dappcentre is a marketing project on the blockchain, promoting casinos, exchanges and anything that is blockchain related. They have a YouTube channel, a reach of over 10,000 people and a reward based system to keep you signing up to the companies advertised.
This month they doing a special promotion to win $100 by answering a question related to the YouTube channel.

To enter follow this link https://gleam.io/FYjBA/win-100-usd-answering-correct-answer-behind-dappcentre-youtube-channel-subliminal-message but I do suggest watching one of the YouTube videos to find the song first.
Good luck to all.