An interesting quote I would like to throw in is from an Old book of traditional songs 'Before Tin Pan Alley put a musical straight jacket on the peoples ears' songs were sung in all sorts of timings.
If you remember that traditionally songs were sung unaccompanied and
instruments were only used for dance or church music,the voice is far more versatile than any instrument.
IF you wish to put accompaniment to a song that was originally only done as a vocal piece,that is YOUR problem,so just get to be a better musician.
And please dont take this as an insult-there are a lot of songs I would not attempt to accompany myself.