By definition, the vast majority of blues tunes performed by singers like SRV will have the same "form"; the classic "twelve bar blues". What distinguishes one blues song from another is typically the melody and the time feel; the "form" is usually (not always) exactly the same. The two songs you mention not only have the same form, as is usual for blues tunes, they are in the same key, the melody is very similar and the tempo is almost the same ("I'm Crying" is slightly slower); those are the things that make them sound so similar.
SRV is a blues/rock singer and his musical palette is fairly limited. I don't think that the fact that many of the tunes he performs have the same form is any sort of indictment of him as an artist. I do think that those two tunes are so similar that it seems almost ridiculous, but not terribly surprising. I do think it is an indictment that he is not able to do something with the interpretation of each to distinguish one from the other.
Some of the other artists mentioned do sound very similar from tune to tune, but those tunes don't necessarily use the same "form". "Form" is not the same as "formula". Actually, a better way of looking at this issue, and a great test of an artist's true talent, is wether an artist can sound fresh and interesting IN SPITE OF the fact that his/her tunes use the same form.
SRV is a blues/rock singer and his musical palette is fairly limited. I don't think that the fact that many of the tunes he performs have the same form is any sort of indictment of him as an artist. I do think that those two tunes are so similar that it seems almost ridiculous, but not terribly surprising. I do think it is an indictment that he is not able to do something with the interpretation of each to distinguish one from the other.
Some of the other artists mentioned do sound very similar from tune to tune, but those tunes don't necessarily use the same "form". "Form" is not the same as "formula". Actually, a better way of looking at this issue, and a great test of an artist's true talent, is wether an artist can sound fresh and interesting IN SPITE OF the fact that his/her tunes use the same form.