[1] Founded by Nakorn Vejsupaporn, the band initially formed under the name "Extreme" while the members were students at Borpitpimook College.
[3][4] The name was later shortened to Grand Ex after being inspired by Expo '70, a world's fair held in Osaka, Japan in 1970, which was often referred to in promotional material as "EX' 70".
[5] Grand Ex' was formed in 1969 by a group of high school students in Grade 5 at Borpitphimook College, led by Nakorn Vejsupaporn as the solo guitar and band leader.
[4] They also won the media's favorite award, due to their modest clothing of black trousers, white shirts, and ties, in contrast to other rock bands in the competition.
In 1974 they recruited brass musicians, namely Chay Sangcha-um (saxophone), Sanae Supparat (trumpet) and Somsak Apiwatthirakul (trombone), and a new lead singer, Wasan Taesakul (surname at that time).
In 1977, the band released their first official single, Couple Birds (คู่นก), a Thai translation of the Lao song Khard Ruk by William Didtavong.
By the end of 1980, the band's line-up consisted of Nakorn Vejsupaporn (guitar solo, lead vocalist and band leader), Prasith Chaiyatho (drum), Danupol Kaewkarn (guitar chord, lead vocalist), Thanongsak Arpornsiri (bass), Panus Hirunkasi (Saxophone), Sanae Supparat (Trumpet) and Chokdee Phak-phoo (Saxophone, Trombone, keyboard).
[4] After this album, Grand Ex decided to move labels from Azona Promotion to TSE Group, which was affiliated with the Thairath newspaper.
leaving 4 members left such as Nakorn, Danupol, Prasit and Chokdee, who established the band's record label company on behalf of Grand Ex Family.
[3] Danupol Kaewkarn, Nakorn Vejsupaporn, Johnny Anfone, Thanongsak Apornsiri, Panat Hirunkasi, Chamras Saewataporn, Sutee Sangsareechon, Wasan Sirisukpisai, and Aisoon "Oh" Watayanon all performed.