16 April 2021

• 15:14 15:14, 16 April 2021 diff hist −10‎ m Rock en español ‎ →‎Prog rock domain, hard rock origins and Repression (1970-1979): Addition of Crack (British prog-rock influenced)
• 15:13 15:13, 16 April 2021 diff hist 0‎ m Rock en español ‎ →‎Prog rock domain, hard rock origins and Repression (1970-1979): Addition of Crack (British prog-rock influenced) band
• 15:11 15:11, 16 April 2021 diff hist +95‎ m Rock en español ‎ →‎Prog rock domain, hard rock origins and Repression (1970-1979): addition of the band Crack (British prog-rock influenced)

15 April 2021

• 17:39 17:39, 15 April 2021 diff hist +60‎ m 1979 in music ‎ →‎June: release of "Si todo hiciera Crack" by Crack
• 17:28 17:28, 15 April 2021 diff hist +48‎ Crack (band) ‎ /* adition to the category Musical groups established in 1977

3 April 2021

• 13:37 13:37, 3 April 2021 diff hist +244‎ m El Cid ‎ addition to the list: "Marchando una del Cid" (1979) by Crack
• 11:52 11:52, 3 April 2021 diff hist +149‎ m Into the Maelstrom ‎ Addition of progressive rock song by Crack

2 April 2021

• 16:30 16:30, 2 April 2021 diff hist +349‎ m A Descent into the Maelström ‎ →‎Adaptations: Descenso en el Maelström, musical piece by Spanish progressive band