
Quick answer — Yukari Tamura performed 4 anime themes, including "Little Wish ~lyrical step~" from Magical Girl Lyrical Nanoha, "Spiritual Garden" from Magical Girl Lyrical Nanoha A's, "TEARS ECHO" from LOST SONG.
Yukari Tamura performed the anime theme songs "Little Wish ~lyrical step~" (Magical Girl Lyrical Nanoha), "Spiritual Garden" (Magical Girl Lyrical Nanoha A's), "TEARS ECHO" (LOST SONG), "Pleasure treasure" (Magical Girl Lyrical Nanoha ViVid).
Yukari Tamura's first listed anime theme is "Little Wish ~lyrical step~", the ending of Magical Girl Lyrical Nanoha.