We have 6 HomePods in our loft-style house. there are few walls, so we can hear the bedroom pair in the livingroom and the kitchen and the office, but we couldn’t issue commands very well, so we ended up buying all 6 and spreading them out. We have a stereo pair upstairs in the loft, a stereo pair in the living room, a single one in the kitchen and a single one in the office.
We started with only a Music Match subscription and it was good. Except there are a handful of commands that are advertised as features that it can’t do with music match. things like “play songs from 1980”. or “play [insert your favorite genre here] music” or basically anything that requires AI. What it could do is play playlists that I had set up or individual albums and songs when I was very specific with my wording. “Play my playlist Driving” would work, “Play Driving Playlist” might work sometimes, “Play playlist I’m Driving” would never work.
We finally gave up and purchased an Apple Music subscription and it was like opening the flood gates. We still have the issues of having to say the specific playlist name to listen to the playlist, but in all honesty, I almost never play my own playlists any more. “Play French Pop Music”, “Play Songs from 1974”, even just “Play some music” works better than it used to. And when it’s playing just some random music, it mixes in my music match collection with stuff I would never have thought to purchase, so that’s nice.
It still has some limitations. tell your phone to “play The Album by Abba” and it does. Tell the HomePod to “play The Album by Abba” and it plays the album titled “Abba” by abba. You have to say “Play the album The Album by Abba” to the HomePod if you really want to listen to the album they called “The Album”. …that’s just one quirk of the Siri on HomePod. There are many more. We jokingly call Siri on HomePod “Siri 0.75” because it mostly works.
We often just use our iPhones or iPads so we can control the HomePods visually instead of calling out to Siri or having to repeat ourselves occasionally (or having to rely on our memories!). That also allows us to see the album art on our device! It’s a convoluted thing to do, I wish apple would either release an app for controlling the HomePod, or put it as an easy-to-find-setting-that-would-stay-set on my devices so I don’t have to re-connect to them every time I use them. If I am controlling the HomePod(s) from my Mac, it loses the connection every single time the screen saver comes on and I have to go re-connect them. Not a huge deal, because the HomePod keeps playing (and it’s easy enough to do even though it can take a whole minute or two out of my workflow), but the album covers that were displaying so nicely on my Mac screen stop displaying and I have to reconnect to the HomePod to make them show up again.
So I’ve rambled a bit. We also have a massive HomeKit based home set up with blinds and lights and locks and thermostats and the like. All in all, Siri on the HomePod really does need to catch up to Siri on the iPad or iPhone, but it’s still a pretty good thing. And it will work with Music Match, but it will work so much better with AppleMusic.
I have a Music Match subscription still. I maintain both that and AppleMusic for the family. The songs I have in MusicMatch and my playlists sync only to my account. When the husband tells the HomePod Siri to play music, it will not play any of the songs that I have in Music Match unless they also are available in Apple Music. If I tell it to play music, it will include all of my Music Match songs in the normal mix. As I was a DJ in my younger days, I have a ton of special mixes and songs that were one-offs that just aren’t available in Apple Music and the only way to hear them is for me to issue the command to HomePod.
I hope this answers your questions (and a few you may not have asked :).