初めはロックが好きではありませんでしたが、今は好きです。

At first I did not like rock music, but now I do.

初(はじ)めはロックが好(す)きではありませんでしたが、今(いま)は好(す)きです。

Hajime wa rokku ga suki de wa arimasen deshita ga, ima wa suki desu.

始め (はじめ)

beginning; start; outset; opening; first (in line, etc.); origin; such as ...; not to mention ...

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

ロック (ロック)

lock; rock; roc

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

好き (すき)

liking; fondness; love

だ (だ)

be; is; indicates past or completed action; indicates light imperative

有る (ある)

to be (usu. of inanimate objects); to exist; to live; to have; to be located; to be equipped with; to happen; to come about

デス (デス)

death

今 (いま)

now; the present time; just now; soon; immediately; (one) more

です (です)

be; is

Readings: ショ、はじ.め、はじ.めて、はつ、はつ-、うい-、 -そ.める、 -ぞ.め

Meanings: first time, beginning

Readings: コウ、この.む、す.く、よ.い、い.い

Meanings: fond, pleasing, like something

Readings: コン、キン、いま

Meaning: now