" She remembered what Jem, the ex-Silent Brother who'd helped preside over her parabatai ceremony, had said about what Julian was to her, that there was an expression for it in his native Chinese, zhi yin.
"The one who understands your music."
Emma couldn't play a note on any instrument , but Julian understood her music. "

― Cassandra Clare , Lady Midnight (The Dark Artifices, #1)