Question: In Chopin Marche funèbre, measure 19, on right hand, is the "A bemol" played *once* or *three times* ?
Is the "C" played three times ?

[![enter image description here](https://i.stack.imgur.com/HBeNJ.png)](https://i.stack.imgur.com/HBeNJ.png)

Adding also Gymnopédie 1 from Satie :
[![enter image description here](https://i.stack.imgur.com/IHasm.png)](https://i.stack.imgur.com/IHasm.png)

It seems that here, the F# is not played 4 times but only once. But they use exactly the same notation as the case of Chopin Marche Funèbre.

Answer: 
The Ab is played three times, as it is notated. The C is played twice (also as it is notated). Are you perhaps confusing the *Slur* with a *Tie*?
Three times.

Ties connect just two notes. Ties could be notated like A below. Or, more likely, B - which *might* have been confusing.

But it wasn't written that way. The A♭ is played three times.

Not an enormous error in your playing to put right though!

[![enter image description here](https://i.stack.imgur.com/3kRhF.png)](https://i.stack.imgur.com/3kRhF.png)