Complex sentence: The Experience also added emphasis to the rhythm section's parts to back up the signature guitar solo from Hendrix, giving Noel Redding a solid bass line and Mitch Mitchell a well-defined drum part.
Split into simpler sentences: The Experience also added a more established rhythm section to back up the signature guitar solo from Hendrix. Such a rhythm section included Noel Redding's solid bass line and Mitch Mitchell's defined drum part.