Can streamed Music sound better on a Sunday?

Bandwidth will play no part in this, a high definition film only needs 3 Meg a second to stream and the requirements for music is much lower.
So this is not a consideration unless you are stuck in the past and still using a modem on dialup.

Not sure where you people get these ideas from but they are not based on facts..

https://www.highspeedinternet.com/resources/how-much-speed-do-i-need-for-pandora-and-spotify
Streaming music doesn’t require much bandwidth—almost all current internet speeds are more than fast enough to keep your tunes rolling. In most cases, 500 Kbps (0.5 Mbps) is enough speed; you’ll need more speed for multiple streams.

Thanks everyone for all the input. I think Miller carbon said it better than I did. That’s what I was wondering about was if they were able to mess with the size of the pipe during the week when things were busier. Thus I would get Less of a signal. It sounds like that’s not possible and everyone agrees that I am slightly crazy, LOL But that’s OK I’ve been reading through this form for about a month now and I can see that I’m not alone. Thanks everyone, Ray

Depending on your type of broadband you have what is called contention rates where the available bandwidth is shared, but in practice this would not affect the streaming quality and the management of the packet delivery and local cashe Would manage this.

You're not crazy Ray, probably just paying attention. That's the way it went with me. People would say their system sounds better late at night when the power is cleaner. Right. Dream on. Until one afternoon I put on a CD that I was used to hearing late at night. I had put it on just to have some background music while the system was warming up. Wasn't even sitting down. Caught me completely off guard. Had to sit down and listen, trying to understand what could be wrong. Played again late that same night, sounded just like it should. 

Odds are that is all that happened. You are listening closely and noticing things. Now the fun part, trying to understand why.

That's the part that will drive you crazy. Not the fact there is a difference you can hear. The Wonderland of stories why.

Bandwidth and error rates are easy enough to look into with apps like speed test and error logs/rates from your broadband modem...  I would guess it is something else like power or RFI issues...  Some devices can be pretty sensitive...  Even power or RFI noise from a neighbor or business might be the issue...  Maxwell, Tesla and Faraday suggest that all things transmit and receive...