- Official sources: You can find sheet music for Sonic the Hedgehog through the official SEGA website and through music retailers such as Sheet Music Plus and Hal Leonard.
- Fan-made transcriptions: Many fans have transcribed their own sheet music for Sonic the Hedgehog and have made it available online for free. You can find fan-made transcriptions on websites such as the MuseScore community and the Reddit community for sheet music.
- Music books: A few published music books include sheet music for Sonic the Hedgehog. One recommended music book is the "Sega/Capcom Game Piano Collection" book, which includes several arrangements of Sonic the Hedgehog songs. Please bear in mind that physical, published music requires purchase.