曲子: poem for singing, tune, music...
没错: that's right, sure!, rest assured!, that's good, can't go wrong...
杂乱无章: disordered and in a mess (idiom); all mixed up and chaotic...
铅笔: (lead) pencil...
红: red, popular, revolutionary, bonus...
改邪归正: to mend one's ways (idiom), to turn over a new leaf...
超前: to be ahead of one's time, to surpass or outdo one's predecessors, to be ahead of the pack, to take the lead, advanced...