BrenGun

Starwave strikes you within a second, kiwamu kinda has the special label contract with youtube that if you uploads a song to youtube, that the youtube system can automatically recognize songs.  

If a song has kinda 10sec or more a riff or something which is similar to an existing song which is registered  in the youtube copyright database you get a claim. 

6-8 seconds is always no problem. I made a fan video from ABC to show love to ABC in the past and I used from lots of songs 6-8 seconds to make a track. and 0 claim received. AVEX also gives you a claim straight away. lol

So it really depends on which label has their music copyrighted in the system of youtube and or which bands hunt on youtube to get their works down.

And of course some labels and bands don't care if their music is on youtube. 

But it's good to know which bands/labels are alright with it. 

@BrenGun well u can do a yoshiki burger mukbang but that obv gets old faster so the choice is yours rly

@BrenGun You're welcome! By the way it seems that if you mention that the rights of such song go to the label and the band (as I am doing so far), there shouldn't be problems with copyright (at the least with the ones I uploaded)