Nice is relative. What
appeals to me might not be your cup of tea, and vice versa.

For vocals, I'm a huge fan
of the anime songs that came out of the late-80s/early-90s. The
songs by Tsubokura Yuiko and Wada Kanako that were featured in the
original Bubblegum Crisis
and Kimagure Orange Road
still rank as my all-time favourites.