Strengths: High ceiling of counterplay and guessing games in endgame. Good at getting first place.
Weaknesses: Weak early unless you draw Kindness Tune. In endgame, usually the opponent can win by guessing right. Hard to play against Soul Cleaving.

Same as Elixirist, if you have a good deck that includes Embracing Qi Technique, break through on Round 3. But without Earth Spirit Elixir or Small Recover Elixir, the condition is harder to fulfill.

Otherwise, break through early on Round 2, usually keeping your best attack card, and get Unceasing Exercising.

The advantage of breaking through on Round 3 is that you can pick Regenerating Body, Unbowed through Battle, or Tool Governor instead of Unceasing Exercising, assuming you already have enough Physique-building. Regenerating Body is best, of course. The timing for Unbowed through Battle is good; at Virtuoso, it's no good. Tool Governor has a chance to get Kindness Tune.

Same as Elixirist, don't exchange. You are weaker here than Elixirist and almost always play Kindness Tune if you have it.

Unlike Elixirist, often we break through to Incarnation by Cultivation instead of Physique, in which case reserving an Incarnation-phase card now may force us to absorb a useful card in order to break through. For endgame, 48 Physique is enough (for 30 Agility with lv.max Styx Agility + lv.2 Crane Footwork), and we can save Destiny if we stop building Physique, especially if the Life Shop (TL note: or another seasonal mechanic, such as Furnace of Void?) helps us break through and get Unwavering Soul on Round 11.

Divine cards: Shura Roar, Soul Cleaving

Some use but not a lot: Crane Footwork, Soul Seizing (not immediately impactful on Round 8)

Traps: Styx Agility, Exercise Marrow, Predicament for Immortals, Chord In Tune, Concentric Tune

During Immortality, often we play a qi-less deck (playing Tiger Pouncing for free) and it's not efficient to make qi just to play Soul Seizing.

Regenerating Body, Fortunes and Luck, Inheritance of Physique Building, Tool Governor

Unbounded Qi is not completely useless, but I don't recommend it. Before Incarnation, Physique is more precious than qi. At Incarnation, it's unlikely that you fail to find Shura Roar AND Chord In Tune. And even then, often Unbounded Qi will not make the difference between winning and losing.

At Virtuoso, roll down for strength, even to zero. In addition to the usual Duan Xuan combos, there's also Heartbroken Tune + Tiger Pouncing.

Keep Kindness Tune and still play it when appropriate.

If you upgrade Heartbroken Tune, you may need to delay playing it so that you don't die before you've played all the cards you want to play.

There's no need to stay in Virtuoso to find Heartbroken Tune; break through on time to Immortality.

Choose Undying Body. Unlike Elixirist, you are less likely to cycle, so Regenerating Body isn't as good.

Exchange a side job card each round to get the first-exchange bonus while thinning the pool of side job cards. (TL note: See my guide "Card Pool Mechanics".)

Nine Evil Ruptsprite is useful in this phase.

Regen Tune is good against decks with a lot of setup cards, to survive their burst and cycle back to their setup cards. Or even if you still can't win, it can let you catch up a lot of Physique.

Besides Unwavering Soul, Fortunes and Luck is also good.

There are many disruption cards available to you, but you can't keep them all, because you won't have enough cards to exchange. You need to exchange until you can win.

Core cards: Shura Roar, Soul Cleaving, Soul Seizing, Styx Agility, Crane Footwork, Heartbroken Tune

Useful cards: Nine Evil Ruptsprite, Ghost Howling, Chord In Tune, Bearing the Load, Tiger Pouncing

One copy is enough: Predicament for Immortals, Concentric Tune. Often you don't need the upgrade, especially on Predicament.

Niche: Exercise Marrow, Regen Tune, Sky Spirit Tune (vs. Propitious Omen)

No-disruption example:

1. Styx Agility
2. Heartbroken Tune (lv.2)
3. Styx Agility
4. Shura Roar (lv.2)
5. Soul Seizing (lv.2)
6. Soul Seizing
7. Soul Cleaving (lv.2)
8. Soul Cleaving

Can be effective against opponents trying to play around your disruption.

Ghost Howling is mainly good against decks with late-concentrated attacks, such as Sword Intent, because you can only apply Weakened on turn 3 at the earliest (and you almost always go second).

Don't overestimate Predicament for Immortals. Our own Chase is also very good, when we can make 30+ Agility.

30+ Agility example:

1. Styx Agility (lv.max)
2. Heartbroken Tune (lv.max)
3. Styx Agility (lv.2)
4. Nine Evil Ruptsprite (lv.max)
5. Shura Roar (lv.2)
6. Soul Seizing (lv.2)
7. Soul Cleaving (lv.2)
8. Soul Seizing (lv.max)

With very high quality, you can kill in three turns.

In the mirror match, don't play Heartbroken Tune, and try not to play Concentric Tune. It's theoretically possible to make use of Concentric Tune, but it's usually bad without very specific positioning; if you really have nothing else to play, you could try putting it early. Put Soul Cleaving at the end.
Example:
Exercise Marrow + Exercise Marrow + Shura Roar + Tiger Pouncing + Soul Seizing + Soul Seizing + Soul Cleaving + Soul Seizing (TL: Maybe the Soul Cleaving is supposed to be lethal?)

If you have four Ruptsprites, you can play a full Chase deck with Ruptsprite every turn. If you have a 30+ Agility combo, you can even fit an arbitrary card. Be wary of playing a healing card as the arbitrary card, especially if the opponent can manage to play a Blazing Prairie before getting stuck. Soul Cleaving is best, because you might still beat a desperate qi-less deck that's mostly Normal Attacks. If you want to play a Physique card, it's best if it's an attack.
Example:
Crane Footwork + Ruptsprite + Styx Agility + Ruptsprite + Chord In Tune (lv.2+) + Ruptsprite (lv.1) + Soul Cleaving + Ruptsprite

Nangong Sheng prefers to play Blazing Prairie relatively early against Duan Xuan.
Therefore:
Chord In Tune + Predicament + Heartbroken Tune + Ruptsprite + Ruptsprite + Ruptsprite + Shura Roar + Soul Cleaving
(If you don't have three Ruptsprites, you can insert a Soul Seizing before Soul Cleaving.)

Ye Mingming like to play Stygian Moonlight + Shura Roar + Styx Agility + Bearing the Load + Soul Cleaving + Soul Cleaving + whatever (Soul Seizing etc.). Can we do the same, or is it not enough damage without the Styx debuff?

Furnace of Void has the potential to upgrade just two natural copies of Styx Agility to lv.max + lv.2. Does that make Physique-less Musician any good?