Question: When was Bondan Prakoso's musical instrument invented?

full_context: Document 1: Samsons: Samsons is a pop-rock band formed in Jakarta, Indonesia in 2003. The group comprises Ariadinata (vocals), Irfan Aulia (guitar), Erik Partogi Siagian (guitar), Aldri Dataviadi (bass) and Chandra 'Konde' Christanto (drums).
Document 2: Mandolin: The instrument was primarily used in an ensemble setting well into the 1930s, and although the fad died out at the beginning of the 1930s, the instruments that were developed for the orchestra found a new home in bluegrass. The famous Lloyd Loar Master Model from Gibson (1923) was designed to boost the flagging interest in mandolin ensembles, with little success. However, The "Loar" became the defining instrument of bluegrass music when Bill Monroe purchased F-5 S/N 73987 in a Florida barbershop in 1943 and popularized it as his main instrument.
Document 3: Mandolin: Numerous modern mandolin makers build instruments that largely replicate the Gibson F-5 Artist models built in the early 1920s under the supervision of Gibson acoustician Lloyd Loar. Original Loar-signed instruments are sought after and extremely valuable. Other makers from the Loar period and earlier include Lyon and Healy, Vega and Larson Brothers. Some notable modern American carved mandolin manufacturers include, in addition to Kay, Gibson, Weber, Monteleone and Collings. Mandolins from other countries include The Loar (China), Santa, Rosa (China), Michael Kelly (Korea), Eastman (China), Kentucky (China), Heiden (Canada), Gilchrist (Australia) and Morgan Monroe (China).
Document 4: Mandolin: Another family of bowlback mandolins came from Milan and Lombardy. These mandolins are closer to the mandolino or mandore than other modern mandolins. They are shorter and wider than the standard Neapolitan mandolin, with a shallow back. The instruments have 6 strings, 3 wire treble-strings and 3 gut or wire-wrapped-silk bass-strings. The strings ran between the tuning pegs and a bridge that was glued to the soundboard, as a guitar's. The Lombardic mandolins were tuned g b e' a' d" g". A developer of the Milanese stye was Antonio Monzino (Milan) and his family who made them for 6 generations.
Document 5: Bondan Prakoso: Bondan Prakoso (born May 8, 1984) is an Indonesian singer-songwriter, bass guitarist, and record producer. He is known as the former bassist of rock band Funky Kopral (1999–2003) and the lead singer of the rap rock collaboration band, Bondan Prakoso & Fade 2 Black (2005–present). He has won several awards from Indonesian Music Awards with both Funky Kopral and his collaboration band, Bondan Prakoso & Fade 2 Black.
Document 6: Music Man Bongo: The Bongo is a model of bass guitar manufactured by Music Man, a division of Ernie Ball. It was first introduced at the NAMM Show on March 21, 2003. Ernie Ball president Sterling Ball designed the instrument in conjunction with the Music Man Research and Development department and BMW's Designworks team. It is equipped with an 18-volt 4-band preamp (except on the single-pickup model, which has a 3-band preamp; single-pickup models with piezo bridges have a 4-band preamp) designed by Dudley Gimpel with help from Cliff Hugo and other Music Man artists. It also sports a sleek, carved basswood body with high-gloss polyester finish and a satin-finish painted 34" scale maple neck with rosewood fingerboard (pau ferro on lined or unlined fretless, ebony on both fretted and fretless "stealth" basses) featuring 24 high-profile wide frets and crescent moon-shaped position inlays. These basses are generally known for their dual humbucking pickup configuration, as they are the first twin humbucker-equipped models released by Music Man since the introduction of their Sabre and Cutlass bass guitars in the late 1970s.
Document 7: Höfner 500/1: The Höfner 500/1 violin bass (nicknamed the "Beatle bass" or "Cavern bass") is a hollow-bodied bass guitar manufactured by Höfner under several varieties. It was introduced in the mid-1950s and gained celebrity status during the 1960s as one of the primary basses used by Paul McCartney of The Beatles.
Document 8: Iwan Fals: Iwan Fals (born Virgiawan Listanto; 3 September 1961 in Jakarta) is an Indonesian singer–songwriter. In 2002, "Time" magazine named him as a Great Asian Hero.
Document 9: Bass guitar: In the 1930s, musician and inventor Paul Tutmarc from Seattle, Washington, who was manufacturing lap steel guitars, developed the first electric string bass in its modern form, a fretted instrument designed to be played horizontally. The 1935 sales catalog for Tutmarc's electronic musical instrument company, Audiovox, featured his ``Model 736 Bass Fiddle '', a four - stringed, solid - bodied, fretted electric bass instrument with a 30 ⁄ - inch (775 - millimetre) scale length. The adoption of a guitar's body shape made the instrument easier to hold and transport than any of the existing stringed bass instruments. The addition of frets enabled bassists to play in tune more easily than on fretless acoustic or electric upright basses. Around 100 of these instruments were made during this period.
Document 10: Paul D'Amour: Paul D'Amour (born May 12, 1967) is an American musician and the first bass guitarist for Tool. His bass sound was recognized by the aggressive picked tone he developed with his Chris Squire Signature Rickenbacker 4001CS, which can clearly be heard on Tool's first full-length album, "Undertow".
Document 11: Solid body: The origins of the solid body electric guitar are confusing. The first commercially available solid body electric Spanish guitar was produced by the Rickenbacker company in 1931. Les Paul, a guitarist, is often erroneously credited with inventing the first solid body, but Fender is often incorrectly credited as the first to commercially market a solid body electric guitar, which itself was based on a design by Merle Travis. Also it is reported that around the same time (1940) a solid body was created by Jamaican musician and inventor, Hedley Jones. In the 1940s, Les Paul created a guitar called the ``Log, ''which came`` from the 4'' by 4 ''solid block of pine which the guitarist had inserted between the sawed halves of the body that he'd just dismembered. He then carefully re-joined the neck to the pine log, using some metal brackets.'' He then put some pickups that he designed on it. He soon went to companies asking if they would buy his guitar. They turned him down. However, after the Fender Telecaster electric guitar became popular, the Gibson company contacted him and had him endorse a model named after him, The Les Paul guitar. It came out in 1952.
Document 12: Francis Magalona: Francis Michael Durango Magalona (October 4, 1964 – March 6, 2009), also known as FrancisM, Master Rapper, The Mouth and The Man From Manila, was a Filipino rapper, entrepreneur, songwriter, producer, actor, director, and photographer. Born in Mandaluyong City, he was the first Filipino rapper in the Philippines to cross over into the mainstream. He was credited for having pioneered the merging of rap with Pinoy rock, becoming a significant influence to artists in that genre as well. He was also a television host on MTV Asia and Channel V Philippines and on noontime variety television show "Eat Bulaga!" Magalona died seven months after being diagnosed with acute myelogenous leukemia. Magalona was later awarded a posthumous Presidential Medal of Merit. The award's citation noted that it had been given "for his musical and artistic brilliance, his deep faith in the Filipino and his sense of national pride that continue to inspire us."
Document 13: Shafqat Amanat Ali: Shafqat Amanat Ali Khan (), (born 26 February 1965) is a Pakistani classical singer belonging to Patiala Gharana lineage. He was the lead vocalist of the Pakistani rock band Fuzön until 2006 . He was awarded the President's Pride of Performance civil award on 23 March 2008.
Document 14: Michel Boyibanda: Michel Boyibanda is a soukous recording artist, composer, and vocalist in the Republic of the Congo. He was once a member of the soukous band TPOK Jazz, led by François Luambo Makiadi, which dominated the Congolese music scene from the 1950s through the 1980s.
Document 15: Ned Steinberger: Ned Steinberger (b. Princeton, New Jersey, 1948) is an American creator of innovative musical instruments. He is most notable for his design of guitars and basses without a traditional headstock, which are called Steinberger instruments. He also has a line of electric basses and string instruments through his company called NS Design and was also the designer of the first ever Spector bass, the NS. In addition, Ned and Emmett Chapman, creator of the Chapman Stick, collaborated on the creation of the NS Stick, a guitar/bass "multi-mode" instrument sold by Stick Enterprises.
ground_truth: the 1930s
sub_queries: Bondan Prakoso >> instrument Answer: bass guitar
when was the first electric bass guitar made Answer: the 1930s