The career-spanning 50th-anniversary compilation Goin' 50 (2019) features the work of Billy Gibbons, Dusty Hill, and Frank Beard across almost the entire tracklist. However, because it reaches back to the very birth of the band in 1969, it also includes rare guest appearances from the original, pre-fame lineup:

The Core Trio (Tracks 1–3, 6–50)
The standard power-trio lineup accounts for 48 of the 50 songs on the deluxe edition:
Billy Gibbons – Guitars, lead and backing vocals, harmonica, fiddle, keyboards
Dusty Hill – Bass guitar, keyboards, backing and lead vocals
Frank Beard – Drums, percussion, backing vocals

The 1969 Original Lineup (Tracks 4 & 5)
For the historical tracks "Salt Lick" and "Miller's Farm" (originally released as a 1969 single before Hill and Beard joined), the personnel features:
Billy Gibbons – Guitar, vocals
Lanier Greig – Bass guitar, organ
Dan Mitchell – Drums
Tom Moore – Organ (credited as a contributor on these sessions