#2
ohh it sounds good. if your trying to match the singer then not really but you put a good twist on it.

The guitar seems a little out of tune.
#4
I'm assuming your new to singing. Your pitch is alright, a bit flat in some bits, most prominent in the chorus.

when you say "don't let the days go by", don't add a breath in after you "the", it makes you sound asthmatic.

when you sing the chorus, try not to say "day-eeez go-w bye"
try singing "deeeeh-s gooo-h baaaaaa-ye"

sing "days" as if your saying the start of egg = eh
sing go as if your saying the start of orange = oh
sing by like your saying the first part of butt

essentially, when you hit the first sound, vowel keep that going as the body of the note. if u say essentially the entire word and drag out the last sounds, they'll sound very squished.

hopefully you'll understand what I'm getting at.
#6
was quite good, but that song was too easy to sing, try one with higher and/or lower parts