Musician audition questions in Russian.

I need to know how to ask some questions in Russian for a piano player I am auditioning. Can someone tell me if my translations are correct or if there is a better way to say it.

1. How long have you been playing the piano?
Как долго вы играете на пианино?

2. You need to play 3 pieces of contrasting styles.
Вам нужно сыграть 3 песни в контрастных стилях

3. There are 3 songs you must learn from memory. I will give them to you. There will also be six more songs to learn with 24 hours practice.
Есть 3 песни, которые вы должны /вам нужно/ играть по памяти. Я дам их вам. Также есть ещё шесть песен,  которые нужно выучить за 24 часов практики.

4. Do you play any other instruments?
Вы играете на других инструментах?

5. Do you sing?
Вы поете?

6. I can help you practice for the audition if you would like.
Я могу помочь вам практиковать, если вы хотите

Musician audition questions in Russian.

I need to know how to ask some questions in Russian for a piano player I am auditioning. Can someone tell me if my translations are correct or if there is a better way to say it.

1. How long have you been playing the piano?
как долга вы играете на пианино? Correct

2. You need to play 3 pieces of contrasting styles.
Вам нужно сыграть 3 песни контрастных стилей

3. There are 3 songs you must learn from memory. I will give them to you. There will also be six more songs to learn with 24 hours practice.
вот 3 песни, которые вы должны играть по памяти. Я даю их вам. Также еще шесть песен, чтобы Выучить за сутки (за 24 часа)

4. Do you play any other instruments?
Вы еще на чем-то играете?( еще на каком-то инструменте играете?)

5. Do you sing?
Вы поете?

6. I can help you practice for the audition if you would like.
Я могу помочь вам практиковать, если вы хотите

Musician audition questions in Russian.

I need to know how to ask some questions in Russian for a piano player I am auditioning. Can someone tell me if my translations are correct or if there is a better way to say it.

1. How long have you been playing the piano?
Как долго вы играете на пианино?

2. You need to play 3 pieces of contrasting styles.
Вам нужно играть 3 произведения контрастных (разных) стилей

3. There are 3 songs you must learn from memory. I will give them to you. There will also be six more songs to learn with 24 hours practice.
Есть 3 песни, которые вы должны играть по памяти. Я дам их вам. Также будет еще шесть песен, которые нужно выучить за 24 часа практики.

4. Do you play any other instruments?
Вы играете на других инструментах?

5. Do you sing?
Вы поёте?

6. I can help you practice for the audition if you would like.
Я могу помочь вам практиковать, если вы хотите.

they are more or less understandable, which is important:)

1. How long have you been playing the piano?
как долго вы играете на пианино?

2. You need to play 3 pieces of contrasting styles.
Вам нужно сыграть 3 песни контрастных стилей.

- "нужно играть". I'm assuming that you mean 'to play it once'. See below.
Otherwise it is 'играть' but 'нужно' doesn't fit well then.

- 3 pieces = "три произведения" if (1) "peice" is used in the most general sense (piece of art, be it a novel, painting, song or concerto).
- 3 pieces =  "три пьесы" if (2) it is a piano piece which is named this way: "a piece for..." or if (3) mostly in the contexts of learning, any of the number of pieces used for learning.
- 3 songs = "три песни".

- 'контрастных стилей' - our artists don't say it this way:( Or at least I never heard them doing so:)
Alas, i don't know how to rephrase it... but the meaning is perfectly clear! So i left it the way you put it.

3. There are 3 songs you must learn from memory. I will give them to you. There will also be six more songs to learn with 24 hours practice.
Есть 3 песни, которые вы должны играть по памяти.

THe phrase is a correct one. But I don't know the context:((( Let me explain:
"Играть" means repeatedly, many times. Sometimes also means 'be able to play'.
"Сыграть" means: play it once, at some particular moment.

"должны играть" means: 1. Now. Not necessary this moment... 2. in general: like "engineer must know physics".
"должны будете играть" means the same but during (or starting from) some time in future.
"должны сыграть" and "должны будете сыграть" mean more or less the same thing:) Anyway, perfective verbs don't have present - so it clearly refers to future.
Choose the right one among these!

Anyway, I would rephrase it as:
Вы должны [будeте] сыграть три песни по памяти. Or:
Три песни вы должны [будете] играть по памяти.

Я дам их вам.
"даю" is present, "дам" is future tense.

Также еще шесть песен, чтобы узнать с 24 часов практики. "

Кроме того [or: также] будут еще шесть песен, которые вы должны [будете] выучить за 24 часа....

- you used "will", so I use "будут".
- [будете] is optional, but peferable.

- I don't understand what is meant here:( 24 hours of pure practice?
Or 24 hours like "starting from 8 a.m. Tuesday to 8 a.m. Thursday" (i.e. he/she will also sleep and likely will practice for less than 24 hours?) I assumed the latter and omitted the word 'practice'.

4. Do you play any other instruments?
Вы играете на других инструментах?

5. Do you sing?
Вы поёте?

6. I can help you practice for the audition if you would like.
Я могу помочь вам {практиковаться???}, если вы хотите. Or
Если хотите, я могу помочь вам {.....}.

I don't understand which kind of help you offer:) I'm not a musitian:)

The English word 'practice' doesn't have a single universal translation:( Actually 'практиковаться' isn't much Russian, but the meaning is clear. If you wish to sound more natural....
Either you must rephrase it without this word... or I must understand the situation in detail:/