i was always fond of the sound of the key of F (sometimes G#/Ab), it always resonates with me.
i find it really satisfying when the melody repeats and starts over again, it gives you the feeling of accomplishment
Credits & Info
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Kyterkay 
Licensing Terms
Please contact me if you would like to use this in a project. We can discuss the details.
* Contains third-party samples.
Excercise caution when using it, refer to author comments / contact the author for details.
