Her victory is part of a small but growing trend of Arab artists and entertainers rising to prominence.
One of the country's most popular sitcoms is a comedic satire about an Israeli-Arab journalist trying to fit into Jewish society whose attempts frequently backfire. The program is written by Sayed Kashua, an award-winning Arab writer.
All but one of Israel's soccer league teams have Arab players, including the season's top scorer, Ahmed Saba.
Israeli entertainer Golan said he faced criticism for his choice, but said Kader's talent couldn't be ignored. He is currently producing an album for her.
It will likely have Mizrahi and Arabic music on it, and Golan believes Israeli Jews are ready to hear it.
"There will always be those who will jump up and say, how did you pick an Arab?" Golan told the AP.
But, he said, "I didn't do a political program. In the end, what wins is the songs, and not whether she's an Arab or a Jew."
Associated Press writer Amy Teibel contributed to this report.
Diaa Hadid can be reached on Twitter at www.twitter.com/diaahdid
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