The title indicates that its my money but I'm going to state upfront that me and my husband have a joint account so it is our money. I make more money than him so he has a tendency to ask me about big purchases but I always tell him hey you don't need to ask me to spend our money but if you're unsure about the state of our finances feel free to have a discussion about it with me. That being said, here's the specific situation we're in now.

So my husband is in a band with his two friends (lets call them Tom, the drummer, and Jim, the bassist). They're not big or trying to become big, but they do play shows locally and have recorded music before and it's on Apple music and such. The recorded their first EP about a year ago and Tom has a best friend (lets call him Connor) who has a recording studio. Connor let them use the recording studio for free/helped record for the first EP. 

They've been working on songs for their new EP and decided they want to record this one as well. A few weeks ago, my husband suggested to Tom and Jim that his friend Dave has a recording studio that he would let them use for free. Tom said that he didn't want to go behind Connor's back and use another recording studio so my husband and Jim said that's fine, they can use Connor's studio again. So they recorded this new EP last week or so. Then yesterday, my husband gets a text from Tom asking for $100 to help pay for the recording. Tom never mentioned having to pay but my husband still feels obligated because he doesn't want any issues with the band. I say obviously if he wants to spend $100 for this, he should do what he wants because again, it's not just my money. Then my husband asks what I think of the situation and what I would do. 

I think it was a super asshole move of Tom to not tell them beforehand that it would cost money. Yes technically we have $100 but we're in the midst of planning for a wedding (we got courthouse married and are having the reception in a few months) which Tom knows that we are doing, so money is tight right now. Also my husband took a new job that has potential for growth but was a pay cut from his last job, so again, money is tight. I told my husband that if this was my friend, I'd let them know that I think it's incredibly rude that they didn't tell me beforehand that I'd have to pay, that I would never do that to my friends, and I probably would stand my ground and say that I'm not paying for this. But again, I told my husband it's his band and if he really does want to pay them then fine but I don't think it's a good idea and kind of sets a bad precedent that we can just be gouged for money whenever and we'll role over and pay it.

I feel like maybe I'm being a cheap asshole though? I know recording studio shit takes time and stuff so I don't want to make it seem like I don't value someone's time and help. But Tom already paid his friend and I think if he wanted us to pitch in he should have told us. And like I said my husband had a friend who said he would do it for free.

TLDR AITA for thinking that my husband shouldn't pay his friend/bandmate for studio recording time because he didn't tell him it would cost money beforehand?