We can go by Chihiro Onitsuka(鬼束ちひろ)

The lyric is here.

The audio file or streaming to learn Japanese.

Hello, Again ～A Place That's Been There for Ages～(Hello, Again 〜昔からある場所〜) by My Little Lover

The lyric is here.

The audio file or streaming to learn Japanese.

Undone by milet

The lyric is here.(I'll add the link later.)

The audio file or streaming to learn Japanese.

Like the Flow of the River(川の流れのように Kawa No Nagare No Yōni) by Hibari Misora(美空ひばり)

There might be a music video on Youtube.

The lyric is here.

The audio file or streaming to learn Japanese.

Love Is Shining Down(愛燦燦 Aisansan) by Hibari Misora(美空ひばり)

There might be a music video on Youtube.

The lyric is here.

The audio file or streaming to learn Japanese.

Smile Smile(スマイル スマイル) by Ayaka Hirahara(平原綾香)

There might be a music video on Youtube.

The lyric is here.

The audio file or streaming to learn Japanese.

Again and Again by milet

The lyric is here.

The audio file or streaming to learn Japanese.