Crossword clues for A 1 6 letters:ASCALEOn __ of 1 to 10DUNCANSee 1 AcrossIMMABE2010 Black Eyed Peas #1 hitRKELLYSinger of a #1 hit from the "Space Jam" soundtrack albumMCCRAEGeorge with the 1974 #1 hit "Rock Your Baby"ARCTAN_____(1) = pi/4AGASSISecond-youngest after Becker, at the time, to earn $1 million in his sportSTADIA1-Down et al.BMINORKey of Tchaikovsky's Piano Concerto No. 1FATCAT$1,000-a-plate attendeeAFRICA1983 #1 Toto hitEMINORKey of Chopin's Piano Concerto No. 1NELSONSee 1-AcrossBESAME___ Mucho (1940s #1 hit)AFRICA#1 hit for Toto in 1983BINARYNumber system that uses only 0 and 1EILISHSinger with the 2019 #1 hit "bad guy"TOLIVESee 1-DownDRLUKECo-writer of the Miley Cyrus anthem "Party in the U.S.A." [1, 3]LATISHLike a 1:30 lunchANNUALLike January 1GMINORKey of Mozart's Piano Quartet No. 1NACHOSSnack with 1 DownOHGIRLChi-Lites #1 hitMARCUSWith 1 Across, Dr. Kiley's partnerMONDAYWhen repeated, a 1966 number 1 songVOSTOK__ 1: first manned space mission carrying Yuri GagarinPHELPS#1 in all-time Olympic goldAMELIAPage 1 name, July 1937GRAPES1 Down productTODDLEPretend one is 1?EDISONSee 1 AcrossSENATEDem,. 48; Rep., 47; Dem.-Lib., 1.VASSAR1,370 girls.VASSAR1,370 students.BALTICThis lies east of 1 Across.BOWOARNo. 1 of a racing shell crew.GIANTSOpponents of 1 Across.EASTERApril 1, 1956.SAINTSNovember 1 is their day.REDSEA1,450-mile waterway.GOOGOLThe No. 1 followed by 100 zeros.MEDINAPatricia ___, actress who married 1 AcrossLEHMANSee 1 AcrossSAHARADesert partly in 1 AcrossOPENERGame 1IRVINGFirst name of 1 DownURSTEPSee 1 DownNEVADASee 1 AcrossHALSEYOne-named singer with the 2019 #1 hit "Without Me"