Can you help me and correct these sentences about relative pronouns, please?

Adele is the famous British singer whose songs are heard all over the world.
The shop which (puede usar ´that´ también) sells headphones opened last week.
I downloaded the song which we heard on the radio yesterday.
The Iphone that I bought online doesn't work (Si, Yo usaría la palabra ´that´ aquí)
Last night we went to the club where they played jazz.
The year that i lived in Germany was a great experience. (Creo que Es mejor decir ´It was a great experience to have lived in Germany for a year)

Thank you for your help!
Laura

¡Muy bien!

Aloz :)

Un enlace que quizás te ayudaría.

http://www.englishclub.com/grammar/pronouns-relative.htm

All your sentences are correct as you've written them (with just a typo or two), however, there are additional possibilities. I notice that you didn't use any commas, implying that all the relative clauses are non-defining, ie non-restrictive (I believe that's probably the case, although number 2 I'm not so sure), and that you could (and should, in my opinion) replace "which" with "that" -- example "The shop that sells headphones...."
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The word "that" is optional when it introduces an object (as opposed to subject) relative clause: "... the song (that) we heard on the radio...." "The Iphone (that) I bought....." "The year (that) I lived in Germany...." In my opinion, it sounds more powerful when we omit "that."´
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Summary: Your relative clauses are correct, and native speakers talk that way all the time. As a matter of style, I'd replace "which" with "that" in these examples, and omit "that" in the sentences I've cited.

Adele is the famous British singer whose songs are heard all over the world.
The shop wich sells headphones opened last week.
I downloaded the song which we heard on the radio yesterday.
The Iphone (that) I bought online doesn't work (here if possible to omit that?)
Last night we went to the club where they play jazz.
The year which i lived in Germany was a great experience.

Thank you for your help!
Laura