I recently saw the guitar tabs of a For a better day by Avicii and found out that C# chord is played in the interlude though it is not a part of the F Maj key(The key of the song). I am very new to music and I want to know if it's okay to find something off the key or should I remain in the key when making my own tracks??
Link:https://tabs.ultimate-guitar.com/tab/avicii/for-a-better-day-chords-1763071
Also if you have time, give me feedback on this idea that I recently created: https://drive.google.com/file/d/1FKCxxIEdxeQ6fL2BPR0o-4HBxVK2Ne50/view?usp=sharing
Thanks.
