Ooof, that's tough. Personally, my 2021 goal is to record these songs to my satisfaction - I think they're doable but definitely a huge stretch for me:
These 2 songs, however, I won't even bother because I either (a) don't have the phonemes, (b) lack the range and/or sufficient breath control, © just can't produce those sounds (specially scatting to sounds and timbre of musical instruments...nah, pass)...