* Musicnotes: Musicnotes offers a variety of sheet music, including "Letters From the Sky" by Civil Twilight. You can view and print the sheet music for free, or purchase a high-quality PDF for a small fee.
* Ultimate Guitar: Ultimate Guitar is a website that provides free guitar tabs and chords for a variety of songs, including "Letters From the Sky" by Civil Twilight. You can view and print the tabs and chords for free, or create a free account to access additional features.
* Songsterr: Songsterr is another website that provides free guitar tabs and chords for a variety of songs, including "Letters From the Sky" by Civil Twilight. You can view and print the tabs and chords for free, or create a free account to access additional features.
It's important to note that some websites may only provide partial sheet music or may require you to create an account to access the full version. Additionally, the accuracy and quality of the sheet music may vary depending on the source, so it's always a good idea to double-check the sheet music before playing it.