1. "A Cruel Angel's Thesis" (Neon Genesis Evangelion)
2. "Guren no Yumiya" (Attack on Titan)
3. "Secret Base (10 Years After Ver.)" (Anohana: The Flower We Saw That Day)
4. "Unravel" (Tokyo Ghoul)
5. "Again" (Fullmetal Alchemist: Brotherhood)
6. "My Heart Will Go On" (Titanic - also featured in the anime movie "Your Lie in April")
7. "Merry-Go-Round of Life" (Howl's Moving Castle)
8. "Let It Go" (Frozen - also featured in the anime movie "Sing a Bit of Harmony")
9. "Twinkle Twinkle Little Star" (Various anime and children's songs)
10. "Happy Birthday to You" (Used in various anime for birthday celebrations)
Remember, the difficulty level of a song can vary depending on your skill level and practice. It is always a good idea to start with simpler songs and gradually progress to more complex ones as you improve.