[mcl22]

I already did this test and here are the results:

Bonnie Tyler in / Boney M. not:
Trying to play Bonnie Tyler
App: "öffne kodi und spiel musik von bonnie tyler"
Log:
Spiele Musik von bonnie tyler
Searching for artist "bonnie tyler"
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Trying to match: bonnie tyler
Simple match on direct comparison
Located artist "Bonnie Tyler"
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Adding 17 items to the queue...
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***

Trying to play Boney M.
App: "öffne kodi und spiel musik von bonnie tyler"
Log:
Spiele Musik von bonnie tyler
Searching for artist "bonnie tyler"
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Trying to match: bonnie tyler
Simple match on direct comparison
Located artist "Bonnie Tyler"
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Adding 17 items to the queue...
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***

Bonnie Tyler not in / Boney M. not in:
Trying to play Bonnie Tyler
App: "öffne kodi und spiel musik von bonnie tyler"
Log:
Spiele Musik von bonnie tyler
Searching for artist "bonnie tyler"
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Trying to match: bonnie tyler
Simple match on direct comparison
Located artist "Bonnie Tyler"
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Adding 17 items to the queue...
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***
Sending request to http://***/jsonrpc from device amzn1.ask.device.AH***

Trying to play Boney M.
App: "öffne kodi und spiel musik von bonnie tyler"
"öffne kodi und spiel musik von joni james"
"öffne kodi und spiel musik von bon jovi"
"öffne kodi und spiel musik von bangles"
"öffne kodi und spiel musik von rumjacks"
"öffne kodi und spiel musik von boney m."
Boney M. in this case is matched correctly in let's say about 30%. Once it was "none" and the rest is listed above. I understand that I perhaps didn't speak clear enough but those "hits" are all samples and that is what is written in my history. That's why it seems to me that she first tries to match and then writes the history.
The server logs in those cases are as intended.

Bonnie Tyler in / Boney M. in:
Both artists are matched correctly.

Bonnie Tyler not in / Boney M. in:
Boney M. is matched correctly but for Bonnie Tyler Alexa and the log just tells that she couldn't find none. And in one case she instead played Boney M.

So at least in this scenario to me it seems to be saver with both in or both out. But if I only had music from Boney M. and then would get some from Bonnie Tyler it wouldn't work without manually adding her to the samples. And that is only this scenario I accidentaly found. I guess this happens for others, too.

Another problem is that the results above are not absolutly reproducable. Eg after I did all those tests I again deleted both artists from the samples and tried again. This time Alexa either couldn't find none or tried to play Body Count or something else for both artists.