Does the effectiveness of a harpy’s song fluctuate based on her charisma score?

The 5e harpy has a Luring Song ability:

Luring Song: The harpy sings a magical melody. Every Humanoid and giant within 300 ft. of the harpy that can hear the song must succeed on a DC 11 Wisdom saving throw or be Charmed until the song ends.

Would changing one (or more) specific abilities modify the harpy’s ‘Luring Song’ DC / saving throw? Are monster spell-like abilities (such as this one) linked &/or attached to specific ability scores in the first place?

Reason for asking: A harpy + bard would require changing basic harpy stats – does this even matter for her preexisting & innate song ability? Related questions obviously include examples like a Beholder (and their eye-rays) finding the right ability-modifying tome. And so on with creatures like Medusas (gaze), Dryads (charms) and Angels (spell-like abilities) with ability jumps and pumps.

Note: this must be in the monster manual somewhere – or even in StackExchange already. My apologies in advance for failing to find it.

What triggers the benefit of the bard’s “Song of Rest” feature?

In D&D 5e, the benefit of the Bard’s “Song of Rest” feature triggers “if you or any friendly creatures who can hear your performance regain hit points at the end of the the short rest.”

Does Song of Rest’s benefit apply just when spending hit dice to regain hit points?
Or does it apply to any other way that a player might regain hit points at the end of a short rest (e.g. by casting a spell, using a Second Wind, eating a Goodberry, etc.)?

Song of The Heart for Inspire Competence [3.5]

everyone! I was building a Bard for a 3.5 campaign and I noticed that online, even in this forum it’s suggested to swap inspire competence for Song of the Heart as a bonus feat (Eberron Campaign). Now, the inspire competence ability is a prerequisite for the above feat, so I was wondering: do I have to ignore prerequisites for it because it is a bonus feat? And if that’s the case, is there an explicit rule for this or something that can support this theory at my DM’s eyes? Thanks in advice for your answers.

What are the audible and physical manifestations of the ability “Lore Song”?

Dungeonscape has an alternative class feature for bards called “Lore Song” (page 8).

The key text is:

Bardic music serves many purposes, aiding your allies or manipulating your enemies. You have refined your performance of another group of bardic songs, full of lost knowledge, obscure lore, and relevant anecdotes. These lore songs inspire you to come up with new solutions to difficult problems.

Benefit: Once per day, as an immediate action, you can gain a +4 insight bonus on a single attack, check, or save.

I know it’s supposed to be one question, but I’m sneaking two parts in to this one:

If a bard with Perform (Voice) uses this ability to improve a diplomacy check,

  1. Is the opponent (and other people around) aware of that?
  2. If so, can the bard use Sleight of Hand to hide the activation?

[ Other – Music ] Open Question : What are some of your favorite Christmas songs (Who song by who)?

For example: IMO, mine is This Christmas by Donny Hathaway. My Honorable Mention favorite is: Let it Snow by Boyz II Men, I’m Dreaming of the White Christmas by The Drifters, Rocking Around the Christmas Tree by Brenda Lee, Santa Claus is Coming to Town by The Jackson 5, Sleigh Ride by TLC, Slient Night by The Temptations, Back Door Santa by Clarence Carter, Jingle Bell Rock by Bobby Helms, All Alone for Christmas by Darlene Love, Christmas in Hollis by Run-DMC, The Christmas Song by Nat King Cole, Rudolph the Red Nosed Reindeer by The Temptations; Let It Snow! Let It Snow! Let It Snow! by Vaughn Monroe, and All I Want For Christmas is You by Mariah Carey

3 column layout for a song site. Sidebar on left/right, and content between them

So I’m working on a website, an anime one to be precise, where people can read about anime songs, their singers, rate them/post comments to them, add them to their list etc., and this is the current layout of the site of a song.

I think it’s decent, and I’m planning to keep it this way, but I’d like to know what others, maybe some experts think about this layout.

So as you can see, on desktop view there is a sidebar menu on the left(which can’t be closed), and there is another one on the right, which contains some info about the song, such as the embedded youtube video, some statistics, info about the singer(if exists),anime, and the lyrics at the bottom. Both sidebars and the div between them are separately scrollable, but the scrollbars are hidden, because IMO it would ruin the design/layout.

And between them the content div is placed, which contains further information about the song(statistics, song recommendations, comment section etc).

Their width goes like this: 20-65-15

Desktop view

Desktop view

On mobile view, the sidebar on the right is being pushed to the top of the content div, since it perfectly fits in the screen size of a phone, and of course the menu(but without the search section) can be opened with the usual hamburger menu icon, but unlike most sites, it’s placed on the bottom.

Mobile view

Mobile view

This layout is also convenient when the user wishes to read all the comments. On that site, the layout is still the same, so the sidebar on the right is still visible. But this time it’s only visible on desktop view, so this is one privilege of those who visit the site on a PC.

Site of all comments

Do you think a layout like this would be convinent for the users? Or isn’t it too unusual to have sidebars on both sides?