I love the first film. The second - well, as we all know, we don't have John Belushi with us anymore, which is one strike right there. The filmmakers made the good choices of John Goodman and Joe Morton as backup singers. Had they stopped there, the film would have been much better.
Instead, a kid was thrown into the mix. An orphan, of course. Awwww. Elwood Blues is supposed to act as mentor for the kid (Buster), but forgets to return Buster to the orphanage, getting half the cops in the country and several mean orphanage workers on his tail.
Now, the whole point of the first Blues Brothers film is that these guys can't stay out of trouble. The character of Elwood, with or without Brother Jake, is going to get himself in it up to his eyeballs. The whole story about Elwood being chased for kidnapping is ludicrous. Elwood is going to get in trouble for one thing or another. It didn't have to be kidnapping.
Thus, we end up listening to a prepubescent kid squalling the lines of a damned good song, one that was belted out by three fine singers (Aykroyd, Goodman, and Morton), thus ruining the whole effect. It's no wonder that the Blues Brothers lost the Battle of the Bands - I'd have booed them offstage for bringing a kid into the mix.
There's an cloying, aren't-we-cute gushiness about Buster and his little Blues Brothers outfit that almost gags me. I loved the musical numbers and all the guest artists - and what an impressive group they are! - so I can't understand why the filmmakers would drag down the storyline by introducing a kid, and throwing in all the clichés associated with a small child interacting with adults. The kid is precocious. He's (supposedly, though I see no evidence of it) a good singer. He gives a pep talk at the crucial time. He's easy to bond with. It just doesn't work.
I will watch it for the music and for Elwood's highly inventive method of parallel parking, but I fast-forward through Buster's scenes.