Music
Rex Features
Rising star Jackson, 21, recently dismissed the genre as "kind of empty, like hollow and not rooted in anything good or healthy".
She added: "Lyrically it's just like really, really bad - I think a lot of it just doesn't mean anything."
However, Dappy has now claimed that Jackson's remarks were ignorant, advising the singer to educate herself about R&B before commenting again.
Speaking to the Daily Star Sunday, he explained: "I'm a fan of La Roux but she needs to expand her knowledge of music. There's a much wider range and variety than she knows about and she needs to listen to it."
La Roux's self-titled debut disc is expected to top the UK albums chart today.
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