is it different to say "I" in Kanji and Watashi/Ore/Buka etc. in Japanese?

[Jona U]

when i listen to japanese music, when they sing to the word, "I" in Kanji, they rarely use watashi,etc etc. they usually use the Kanji pronouncation of "I". Is it acceptable to use it in real world?
How do you define what pronouncation should you use when you read "I" in kanji in a book, magazine.. do you use the Kanji pronouncation or watashi...etc. and Why?

[Belie]

First off, I think you are very confused. Kanji is a writing system, not a system for pronunciation. It's the most complicated one and the one people always get tattoos of.

Watashi, ore, and boku all have their own separate kanji but they all mean I. Watashi is the most polite, but because it is three syllables it often doesn't flow will with a lot of music. Derived from this is "atashi" which is more feminine but still doesn't appear much in music. Both are in daily speech, though.

Boku is for young males (like little boys) mainly but it often appears in music with either male or female singers because of its soft sound and only having two syllabic sounds.

Ore is the least polite--it's very boastful. It sometimes appears in songs too but you shouldn't use this when speaking unless you know what you're doing (and you, as a foreigner, do not).

[Belie]

First off, I think you are very confused. Kanji is a writing system, not a system for pronunciation. It's the most complicated one and the one people always get tattoos of.

Watashi, ore, and boku all have their own separate kanji but they all mean I. Watashi is the most polite, but because it is three syllables it often doesn't flow will with a lot of music. Derived from this is "atashi" which is more feminine but still doesn't appear much in music. Both are in daily speech, though.

Boku is for young males (like little boys) mainly but it often appears in music with either male or female singers because of its soft sound and only having two syllabic sounds.

Ore is the least polite--it's very boastful. It sometimes appears in songs too but you shouldn't use this when speaking unless you know what you're doing (and you, as a foreigner, do not).