A Kind Of Wavetable Thing

maybe there is a way to do this but ive not found it yet . . .

im interested in creating basic instruments using a kind of wavetable synthesis.

the problem here, is that usually an instrument (in basic wavetable thingysysys) has 2 waveforms played at the same time. . .
1- a short sound or attack sound
2- a looping sound of tone.

it would be nice is a single instrument could contain more than one sample played at the same time ((different to building a drum set) . . . but with different env/filet setting for each. .

would this be useful to anyone else ?

there are workarounds but this would be interesting for anyone into building using the instrument editor. . . .