I honestly thought this show would be doing better by now but honestly, it hasn't improved much. Season 2 so far hasn't been very impressive, and this episode was a prime reason why. The girl group was annoying and generic, the forgotten "boy band" was annoying. The ending was very predictable.
We didn't get a lot of substantial development, and the laughs were few an far from each other. I only recall laughing at the mother/daughter scenes but that's really about it.
When you're watching an episode of Big Time Rush, your favorite scenes really shouldn't include the secondary characters, that's when you know it wasn't an awesome episode. Disappointing overall.