Musician Origin Feat - apply to self also?

Do folks ever allow the Musician Origin Feat to grant Inspiration to the one using it as well?

"you can play a song on a Musical Instrument with which you have proficiency and give Heroic Inspiration to allies who hear the song."

RAW, "allies" seems to not include oneself, but do tables tend to allow this? Say, once you have Proficiency Bonus high enough to get all your allies and then you?

Well, the definition of "Ally" in the Player's Handbook says (in part) that a creature is your ally "if it is a member of your adventuring party". That seems like it should include yourself, in much the same way as spells that say something like "a creature you can see within range" are generally considered to allow targeting yourself.

I'm not sure that's intended in the specific context of the Musician feat, but it's not something I'd ever make a fuss about in practice, especially given all the other various ways there are to get Heroic Inspiration these days.

 From what I have seen no.  A small trick around it is if the ally is human or has Heroic Inspiration  they can give it to another meaning they can give it to you since they can only have 1.

I figure it’s a yes. If nothing else, it’s not going to break the game or seriously upset the balance if one player gets the Inspiration over another or the whole party has one banked rather than all but one.

Quote from DrakojaPax >>

Do folks ever allow the Musician Origin Feat to grant Inspiration to the one using it as well?

"you can play a song on a Musical Instrument with which you have proficiency and give Heroic Inspiration to allies who hear the song."

RAW, "allies" seems to not include oneself, but do tables tend to allow this? Say, once you have Proficiency Bonus high enough to get all your allies and then you?

 The Rule Glossary doesn't refer to you when mentioning Ally being written from your perspective. Exemple of game features that specifically affect you and your allies include Aura of Courage, Aura of Protection, Aura of Devotion, Nature’s Sanctuary, Smite of Protection, Aura of Life, Animal Friendship, Awaken, Charm Monster, Charm Person, Dominate Beast, Dominate Monster, Mass Suggestion, Suggestion etc

If you were considered your own ally then you would be able to Help yourself, and need no one to  Sneak Attack with in melee.

So game-wise, i believe an enemy or ally refers to another creature than yourself and game features specifically meant to affect you mention ''you and your allies'' in their description.

Having said that, i wouldn't have an issue allowing it to affect the Musician if one of my players took the feat. 

Ally

A creature is your ally if it is a member of your adventuring party, your friend, on your side in combat, or a creature that the rules or the DM designates as your ally.

Rules as Written, the Musician feat allows you to give yourself Heroic Inspiration. However, Rules as Written, the Help action would also allow you to give yourself Advantage on an ability check. That is clearly not the intended function of the Help action, so what is going on?

The source of the issue is the 2024 definition of Ally:

"A creature is your ally if it is a member of your adventuring party, your friend, on your side in combat, or a creature that the rules or the DM designates as your ally."

Because you are a member of your own adventuring party and are on your own side in combat, this definition technically makes you your own ally.

The problem is that several game features clearly assume otherwise. The most obvious examples are the Help action and the Rogue's Sneak Attack feature. If the designers intended allies to include yourself in all cases, these features produce nonsensical results. I suspect the designers simply relied on the ordinary English meaning of "ally" and overlooked the self-reference created by the formal definition.

The simplest way to resolve this contradiction is to adopt the following interpretation:

• Use the 2024 definition of Ally, except that you are not your own ally unless a rule or feature explicitly says otherwise.

• When a feature is intended to include yourself, add a specific exception such as: "For the purpose of this feature, you are considered your own ally."

This interpretation makes existing features function as intended and avoids making phrases such as "you or your allies" redundant.

Unfortunately, this means that determining designer intent requires some judgment. Most players would agree that "ally" in the Help action and Sneak Attack excludes yourself.

The Musician feat is less clear. The fantasy is that you perform music that inspires your adventuring party. Can you also be inspired by your own performance?

Compare this to the Inspiring Leader feat. It has a similar fantasy but explicitly allows you to choose yourself when granting Temporary Hit Points. That clarification is noteworthy because the 2024 definition of Ally already appears to include yourself. The fact that the designers felt the need to specify self-targeting suggests they may not have intended "ally" to include yourself by default.

Taken together, I think the evidence supports the conclusion that the intended reading of Musician is that you cannot grant yourself Heroic Inspiration. That said, the rules are genuinely ambiguous, and allowing self-targeting creates no obvious balance problems. If a table prefers that interpretation, making a specific exception for the Musician feat is a perfectly reasonable house rule.